projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Fix for PR ld/16044: elf32-cris.c h->plt.refcount inconsistency
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson, based on elf32-fr30.c
5 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf/cris.h"
29 #include <limits.h>
30
31 bfd_reloc_status_type
32 cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *,
33 asection *, bfd *, char **);
34 static bfd_boolean
35 cris_elf_set_mach_from_flags (bfd *, unsigned long);
36
37 /* Forward declarations. */
38 static reloc_howto_type cris_elf_howto_table [] =
39 {
40 /* This reloc does nothing. */
41 HOWTO (R_CRIS_NONE, /* type */
42 0, /* rightshift */
43 3, /* size (0 = byte, 1 = short, 2 = long) */
44 0, /* bitsize */
45 FALSE, /* pc_relative */
46 0, /* bitpos */
47 complain_overflow_dont, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_CRIS_NONE", /* name */
50 FALSE, /* partial_inplace */
51 0, /* src_mask */
52 0, /* dst_mask */
53 FALSE), /* pcrel_offset */
54
55 /* An 8 bit absolute relocation. */
56 HOWTO (R_CRIS_8, /* type */
57 0, /* rightshift */
58 0, /* size (0 = byte, 1 = short, 2 = long) */
59 8, /* bitsize */
60 FALSE, /* pc_relative */
61 0, /* bitpos */
62 complain_overflow_bitfield, /* complain_on_overflow */
63 bfd_elf_generic_reloc, /* special_function */
64 "R_CRIS_8", /* name */
65 FALSE, /* partial_inplace */
66 0x0000, /* src_mask */
67 0x00ff, /* dst_mask */
68 FALSE), /* pcrel_offset */
69
70 /* A 16 bit absolute relocation. */
71 HOWTO (R_CRIS_16, /* type */
72 0, /* rightshift */
73 1, /* size (0 = byte, 1 = short, 2 = long) */
74 16, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_bitfield, /* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_CRIS_16", /* name */
80 FALSE, /* partial_inplace */
81 0x00000000, /* src_mask */
82 0x0000ffff, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 /* A 32 bit absolute relocation. */
86 HOWTO (R_CRIS_32, /* type */
87 0, /* rightshift */
88 2, /* size (0 = byte, 1 = short, 2 = long) */
89 32, /* bitsize */
90 FALSE, /* pc_relative */
91 0, /* bitpos */
92 /* We don't want overflow complaints for 64-bit vma builds
93 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
94 32-bit ELF) where sym=0xc0001234.
95 Don't do this for the PIC relocs, as we don't expect to
96 see them with large offsets. */
97 complain_overflow_dont, /* complain_on_overflow */
98 bfd_elf_generic_reloc, /* special_function */
99 "R_CRIS_32", /* name */
100 FALSE, /* partial_inplace */
101 0x00000000, /* src_mask */
102 0xffffffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
104
105 /* An 8 bit PC-relative relocation. */
106 HOWTO (R_CRIS_8_PCREL, /* type */
107 0, /* rightshift */
108 0, /* size (0 = byte, 1 = short, 2 = long) */
109 8, /* bitsize */
110 TRUE, /* pc_relative */
111 0, /* bitpos */
112 complain_overflow_bitfield, /* complain_on_overflow */
113 cris_elf_pcrel_reloc, /* special_function */
114 "R_CRIS_8_PCREL", /* name */
115 FALSE, /* partial_inplace */
116 0x0000, /* src_mask */
117 0x00ff, /* dst_mask */
118 TRUE), /* pcrel_offset */
119
120 /* A 16 bit PC-relative relocation. */
121 HOWTO (R_CRIS_16_PCREL, /* type */
122 0, /* rightshift */
123 1, /* size (0 = byte, 1 = short, 2 = long) */
124 16, /* bitsize */
125 TRUE, /* pc_relative */
126 0, /* bitpos */
127 complain_overflow_bitfield, /* complain_on_overflow */
128 cris_elf_pcrel_reloc, /* special_function */
129 "R_CRIS_16_PCREL", /* name */
130 FALSE, /* partial_inplace */
131 0x00000000, /* src_mask */
132 0x0000ffff, /* dst_mask */
133 TRUE), /* pcrel_offset */
134
135 /* A 32 bit PC-relative relocation. */
136 HOWTO (R_CRIS_32_PCREL, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 32, /* bitsize */
140 TRUE, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 cris_elf_pcrel_reloc, /* special_function */
144 "R_CRIS_32_PCREL", /* name */
145 FALSE, /* partial_inplace */
146 0x00000000, /* src_mask */
147 0xffffffff, /* dst_mask */
148 TRUE), /* pcrel_offset */
149
150 /* GNU extension to record C++ vtable hierarchy. */
151 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
152 0, /* rightshift */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
154 0, /* bitsize */
155 FALSE, /* pc_relative */
156 0, /* bitpos */
157 complain_overflow_dont, /* complain_on_overflow */
158 NULL, /* special_function */
159 "R_CRIS_GNU_VTINHERIT", /* name */
160 FALSE, /* partial_inplace */
161 0, /* src_mask */
162 0, /* dst_mask */
163 FALSE), /* pcrel_offset */
164
165 /* GNU extension to record C++ vtable member usage. */
166 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
167 0, /* rightshift */
168 2, /* size (0 = byte, 1 = short, 2 = long) */
169 0, /* bitsize */
170 FALSE, /* pc_relative */
171 0, /* bitpos */
172 complain_overflow_dont, /* complain_on_overflow */
173 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
174 "R_CRIS_GNU_VTENTRY", /* name */
175 FALSE, /* partial_inplace */
176 0, /* src_mask */
177 0, /* dst_mask */
178 FALSE), /* pcrel_offset */
179
180 /* This is used only by the dynamic linker. The symbol should exist
181 both in the object being run and in some shared library. The
182 dynamic linker copies the data addressed by the symbol from the
183 shared library into the object, because the object being
184 run has to have the data at some particular address. */
185 HOWTO (R_CRIS_COPY, /* type */
186 0, /* rightshift */
187 2, /* size (0 = byte, 1 = short, 2 = long) */
188 32, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_bitfield, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_CRIS_COPY", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 /* Like R_CRIS_32, but used when setting global offset table entries. */
200 HOWTO (R_CRIS_GLOB_DAT, /* type */
201 0, /* rightshift */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
203 32, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_bitfield, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_CRIS_GLOB_DAT", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* Marks a procedure linkage table entry for a symbol. */
215 HOWTO (R_CRIS_JUMP_SLOT, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 32, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_bitfield, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_CRIS_JUMP_SLOT", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 /* Used only by the dynamic linker. When the object is run, this
230 longword is set to the load address of the object, plus the
231 addend. */
232 HOWTO (R_CRIS_RELATIVE, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 32, /* bitsize */
236 FALSE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_CRIS_RELATIVE", /* name */
241 FALSE, /* partial_inplace */
242 0, /* src_mask */
243 0xffffffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
245
246 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
247 HOWTO (R_CRIS_16_GOT, /* type */
248 0, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_CRIS_16_GOT", /* name */
256 FALSE, /* partial_inplace */
257 0, /* src_mask */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 HOWTO (R_CRIS_32_GOT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
265 FALSE, /* pc_relative */
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_32_GOT", /* name */
270 FALSE, /* partial_inplace */
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274
275 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
276 the GOT table for the symbol. */
277 HOWTO (R_CRIS_16_GOTPLT, /* type */
278 0, /* rightshift */
279 1, /* size (0 = byte, 1 = short, 2 = long) */
280 16, /* bitsize */
281 FALSE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_CRIS_16_GOTPLT", /* name */
286 FALSE, /* partial_inplace */
287 0, /* src_mask */
288 0xffff, /* dst_mask */
289 FALSE), /* pcrel_offset */
290
291 HOWTO (R_CRIS_32_GOTPLT, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
295 FALSE, /* pc_relative */
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_CRIS_32_GOTPLT", /* name */
300 FALSE, /* partial_inplace */
301 0, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304
305 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
306 be necessary. */
307 HOWTO (R_CRIS_32_GOTREL, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 32, /* bitsize */
311 FALSE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_CRIS_32_GOTREL", /* name */
316 FALSE, /* partial_inplace */
317 0, /* src_mask */
318 0xffffffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
320
321 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
322 to create PLT entry for symbol. */
323 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_CRIS_32_PLT_GOTREL", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* A 32-bit offset from PC (location after the relocation) + addend to
338 entry for this symbol in PLT and request to create PLT entry for
339 symbol. */
340 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
341 0, /* rightshift */
342 2, /* size (0 = byte, 1 = short, 2 = long) */
343 32, /* bitsize */
344 TRUE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_bitfield, /* complain_on_overflow */
347 cris_elf_pcrel_reloc, /* special_function */
348 "R_CRIS_32_PLT_PCREL", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0xffffffff, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 /* We don't handle these in any special manner and cross-format
355 linking is not supported; just recognize them enough to pass them
356 around. FIXME: do the same for most PIC relocs and add sanity
357 tests to actually refuse gracefully to handle these and PIC
358 relocs for cross-format linking. */
359 #define TLSHOWTO32(name) \
360 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
361 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
362 #define TLSHOWTO16X(name, X) \
363 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
364 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
365 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
366 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
367
368 TLSHOWTO32 (R_CRIS_32_GOT_GD),
369 TLSHOWTO16 (R_CRIS_16_GOT_GD),
370 TLSHOWTO32 (R_CRIS_32_GD),
371 TLSHOWTO32 (R_CRIS_DTP),
372 TLSHOWTO32 (R_CRIS_32_DTPREL),
373 TLSHOWTO16S (R_CRIS_16_DTPREL),
374 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
375 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
376 TLSHOWTO32 (R_CRIS_32_TPREL),
377 TLSHOWTO16S (R_CRIS_16_TPREL),
378 TLSHOWTO32 (R_CRIS_DTPMOD),
379 TLSHOWTO32 (R_CRIS_32_IE)
380 };
381 \f
382 /* Map BFD reloc types to CRIS ELF reloc types. */
383
384 struct cris_reloc_map
385 {
386 bfd_reloc_code_real_type bfd_reloc_val;
387 unsigned int cris_reloc_val;
388 };
389
390 static const struct cris_reloc_map cris_reloc_map [] =
391 {
392 { BFD_RELOC_NONE, R_CRIS_NONE },
393 { BFD_RELOC_8, R_CRIS_8 },
394 { BFD_RELOC_16, R_CRIS_16 },
395 { BFD_RELOC_32, R_CRIS_32 },
396 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
397 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
398 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
399 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
400 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
401 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
402 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
403 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
404 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
405 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
406 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
407 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
408 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
409 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
410 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
411 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
412 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
413 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
414 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
415 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
416 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
417 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
418 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
419 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
420 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
421 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
422 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
423 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
424 };
425
426 static reloc_howto_type *
427 cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
428 bfd_reloc_code_real_type code)
429 {
430 unsigned int i;
431
432 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
433 if (cris_reloc_map [i].bfd_reloc_val == code)
434 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
435
436 return NULL;
437 }
438
439 static reloc_howto_type *
440 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
441 {
442 unsigned int i;
443
444 for (i = 0;
445 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
446 i++)
447 if (cris_elf_howto_table[i].name != NULL
448 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
449 return &cris_elf_howto_table[i];
450
451 return NULL;
452 }
453
454 /* Set the howto pointer for an CRIS ELF reloc. */
455
456 static void
457 cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
458 arelent * cache_ptr,
459 Elf_Internal_Rela * dst)
460 {
461 enum elf_cris_reloc_type r_type;
462
463 r_type = ELF32_R_TYPE (dst->r_info);
464 if (r_type >= R_CRIS_max)
465 {
466 /* xgettext:c-format */
467 _bfd_error_handler (_("%B: invalid CRIS reloc number: %d"), abfd, r_type);
468 r_type = 0;
469 }
470 cache_ptr->howto = & cris_elf_howto_table [r_type];
471 }
472
473 bfd_reloc_status_type
474 cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
475 arelent *reloc_entry,
476 asymbol *symbol,
477 void * data ATTRIBUTE_UNUSED,
478 asection *input_section,
479 bfd *output_bfd,
480 char **error_message ATTRIBUTE_UNUSED)
481 {
482 /* By default (using only bfd_elf_generic_reloc when linking to
483 non-ELF formats) PC-relative relocs are relative to the beginning
484 of the reloc. CRIS PC-relative relocs are relative to the position
485 *after* the reloc because that's what pre-CRISv32 PC points to
486 after reading an insn field with that reloc. (For CRISv32, PC is
487 actually relative to the start of the insn, but we keep the old
488 definition.) Still, we use as much generic machinery as we can.
489
490 Only adjust when doing a final link. */
491 if (output_bfd == (bfd *) NULL)
492 reloc_entry->addend -= 1 << reloc_entry->howto->size;
493
494 return
495 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
496 input_section, output_bfd, error_message);
497 }
498 \f
499 /* Support for core dump NOTE sections.
500 The slightly unintuitive code layout is an attempt to keep at least
501 some similarities with other ports, hoping to simplify general
502 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
503
504 static bfd_boolean
505 cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
506 {
507 int offset;
508 size_t size;
509
510 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
511 switch (note->descsz)
512 {
513 default:
514 return FALSE;
515
516 case 202: /* Linux/CRISv32 */
517 /* pr_cursig */
518 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
519
520 /* pr_pid */
521 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
522
523 /* pr_reg */
524 offset = 70;
525 size = 128;
526
527 break;
528 }
529 else
530 switch (note->descsz)
531 {
532 default:
533 return FALSE;
534
535 case 214: /* Linux/CRIS */
536 /* pr_cursig */
537 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
538
539 /* pr_pid */
540 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
541
542 /* pr_reg */
543 offset = 70;
544 size = 140;
545
546 break;
547 }
548
549 /* Make a ".reg/999" section. */
550 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
551 size, note->descpos + offset);
552 }
553
554 static bfd_boolean
555 cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
556 {
557 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
558 switch (note->descsz)
559 {
560 default:
561 return FALSE;
562
563 case 124: /* Linux/CRISv32 elf_prpsinfo */
564 elf_tdata (abfd)->core->program
565 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
566 elf_tdata (abfd)->core->command
567 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
568 }
569 else
570 switch (note->descsz)
571 {
572 default:
573 return FALSE;
574
575 case 124: /* Linux/CRIS elf_prpsinfo */
576 elf_tdata (abfd)->core->program
577 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
578 elf_tdata (abfd)->core->command
579 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
580 }
581
582 /* Note that for some reason, a spurious space is tacked
583 onto the end of the args in some (at least one anyway)
584 implementations, so strip it off if it exists. */
585
586 {
587 char *command = elf_tdata (abfd)->core->command;
588 int n = strlen (command);
589
590 if (0 < n && command[n - 1] == ' ')
591 command[n - 1] = '\0';
592 }
593
594 return TRUE;
595 }
596 \f
597 /* The name of the dynamic interpreter. This is put in the .interp
598 section. */
599
600 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
601
602 /* The size in bytes of an entry in the procedure linkage table. */
603
604 #define PLT_ENTRY_SIZE 20
605 #define PLT_ENTRY_SIZE_V32 26
606
607 /* The first entry in an absolute procedure linkage table looks like this. */
608
609 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
610 {
611 0xfc, 0xe1,
612 0x7e, 0x7e, /* push mof. */
613 0x7f, 0x0d, /* (dip [pc+]) */
614 0, 0, 0, 0, /* Replaced with address of .got + 4. */
615 0x30, 0x7a, /* move [...],mof */
616 0x7f, 0x0d, /* (dip [pc+]) */
617 0, 0, 0, 0, /* Replaced with address of .got + 8. */
618 0x30, 0x09 /* jump [...] */
619 };
620
621 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
622 {
623 0x84, 0xe2, /* subq 4,$sp */
624 0x6f, 0xfe, /* move.d 0,$acr */
625 0, 0, 0, 0, /* Replaced by address of .got + 4. */
626 0x7e, 0x7a, /* move $mof,[$sp] */
627 0x3f, 0x7a, /* move [$acr],$mof */
628 0x04, 0xf2, /* addq 4,acr */
629 0x6f, 0xfa, /* move.d [$acr],$acr */
630 0xbf, 0x09, /* jump $acr */
631 0xb0, 0x05, /* nop */
632 0, 0 /* Pad out to 26 bytes. */
633 };
634
635 /* Subsequent entries in an absolute procedure linkage table look like
636 this. */
637
638 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
639 {
640 0x7f, 0x0d, /* (dip [pc+]) */
641 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
642 0x30, 0x09, /* jump [...] */
643 0x3f, 0x7e, /* move [pc+],mof */
644 0, 0, 0, 0, /* Replaced with offset into relocation table. */
645 0x2f, 0xfe, /* add.d [pc+],pc */
646 0xec, 0xff,
647 0xff, 0xff /* Replaced with offset to start of .plt. */
648 };
649
650 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
651 {
652 0x6f, 0xfe, /* move.d 0,$acr */
653 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
654 0x6f, 0xfa, /* move.d [$acr],$acr */
655 0xbf, 0x09, /* jump $acr */
656 0xb0, 0x05, /* nop */
657 0x3f, 0x7e, /* move 0,mof */
658 0, 0, 0, 0, /* Replaced with offset into relocation table. */
659 0xbf, 0x0e, /* ba start_of_plt0_entry */
660 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
661 0xb0, 0x05 /* nop */
662 };
663
664 /* The first entry in a PIC procedure linkage table looks like this. */
665
666 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
667 {
668 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
669 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
670 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
671 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
672 };
673
674 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
675 {
676 0x84, 0xe2, /* subq 4,$sp */
677 0x04, 0x01, /* addoq 4,$r0,$acr */
678 0x7e, 0x7a, /* move $mof,[$sp] */
679 0x3f, 0x7a, /* move [$acr],$mof */
680 0x04, 0xf2, /* addq 4,$acr */
681 0x6f, 0xfa, /* move.d [$acr],$acr */
682 0xbf, 0x09, /* jump $acr */
683 0xb0, 0x05, /* nop */
684 0, 0, /* Pad out to 26 bytes. */
685 0, 0, 0, 0,
686 0, 0, 0, 0
687 };
688
689 /* Subsequent entries in a PIC procedure linkage table look like this. */
690
691 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
692 {
693 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
694 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
695 0x30, 0x09, /* jump [...] */
696 0x3f, 0x7e, /* move [pc+],mof */
697 0, 0, 0, 0, /* Replaced with offset into relocation table. */
698 0x2f, 0xfe, /* add.d [pc+],pc */
699 0xec, 0xff, /* Replaced with offset to start of .plt. */
700 0xff, 0xff
701 };
702
703 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
704 {
705 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
706 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
707 0x6f, 0xfa, /* move.d [$acr],$acr */
708 0xbf, 0x09, /* jump $acr */
709 0xb0, 0x05, /* nop */
710 0x3f, 0x7e, /* move relocoffs,$mof */
711 0, 0, 0, 0, /* Replaced with offset into relocation table. */
712 0xbf, 0x0e, /* ba start_of_plt */
713 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
714 0xb0, 0x05 /* nop */
715 };
716 \f
717 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
718 (and most other PIC/shlib stuff). Check that we don't drift away
719 without reason.
720
721 The CRIS linker, like the m68k and i386 linkers (and probably the rest
722 too) needs to keep track of the number of relocs that it decides to
723 copy in check_relocs for each symbol. This is so that it can discard
724 PC relative relocs if it doesn't need them when linking with
725 -Bsymbolic. We store the information in a field extending the regular
726 ELF linker hash table. */
727
728 /* This structure keeps track of the number of PC relative relocs we have
729 copied for a given symbol. */
730
731 struct elf_cris_pcrel_relocs_copied
732 {
733 /* Next section. */
734 struct elf_cris_pcrel_relocs_copied *next;
735
736 /* A section in dynobj. */
737 asection *section;
738
739 /* Number of relocs copied in this section. */
740 bfd_size_type count;
741
742 /* Example of reloc being copied, for message. */
743 enum elf_cris_reloc_type r_type;
744 };
745
746 /* CRIS ELF linker hash entry. */
747
748 struct elf_cris_link_hash_entry
749 {
750 struct elf_link_hash_entry root;
751
752 /* Number of PC relative relocs copied for this symbol. */
753 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
754
755 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
756 both a general GOT and a PLT-specific GOT entry for the same symbol,
757 when it is referenced both as a function and as a function pointer.
758
759 Number of GOTPLT references for a function. */
760 bfd_signed_vma gotplt_refcount;
761
762 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
763 (zero is never used as an index). FIXME: We should be able to fold
764 this with gotplt_refcount in a union, like the got and plt unions in
765 elf_link_hash_entry. */
766 bfd_size_type gotplt_offset;
767
768 /* The root.got.refcount is the sum of the regular reference counts
769 (this) and those members below. We have to keep a separate count
770 to track when we've found the first (or last) reference to a
771 regular got entry. The offset is in root.got.offset. */
772 bfd_signed_vma reg_got_refcount;
773
774 /* Similar to the above, the number of reloc references to this
775 symbols that need a R_CRIS_32_TPREL slot. The offset is in
776 root.got.offset, because this and .dtp_refcount can't validly
777 happen when there's also a regular GOT entry; that's invalid
778 input for which an error is emitted. */
779 bfd_signed_vma tprel_refcount;
780
781 /* Similar to the above, the number of reloc references to this
782 symbols that need a R_CRIS_DTP slot. The offset is in
783 root.got.offset; plus 4 if .tprel_refcount > 0. */
784 bfd_signed_vma dtp_refcount;
785 };
786
787 static bfd_boolean
788 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
789 void * );
790 static bfd_boolean
791 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
792 void *);
793
794 /* The local_got_refcounts and local_got_offsets are a multiple of
795 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
796 refcount for GOT itself, see code), with the summary / group offset
797 for local symbols located at offset N, reference counts for
798 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
799 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
800 3*LSNUM. */
801
802 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
803 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
804 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
805 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
806
807 /* CRIS ELF linker hash table. */
808
809 struct elf_cris_link_hash_table
810 {
811 struct elf_link_hash_table root;
812
813 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
814 since we try and avoid creating GOTPLT:s when there's already a GOT.
815 Instead, we keep and update the next available index here. */
816 bfd_size_type next_gotplt_entry;
817
818 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
819 been seen for any input; if != 0, then the constant-offset
820 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
821 negative at relocation, so that we don't need an extra flag for
822 when the reloc is output. */
823 bfd_signed_vma dtpmod_refcount;
824 };
825
826 /* Traverse a CRIS ELF linker hash table. */
827
828 #define elf_cris_link_hash_traverse(table, func, info) \
829 (elf_link_hash_traverse \
830 (&(table)->root, \
831 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
832 (info)))
833
834 /* Get the CRIS ELF linker hash table from a link_info structure. */
835
836 #define elf_cris_hash_table(p) \
837 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
838 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
839
840 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
841 "parent class"). The .root reference is just a simple type
842 check on the argument. */
843
844 #define elf_cris_hash_entry(p) \
845 ((struct elf_cris_link_hash_entry *) (&(p)->root))
846
847 /* Create an entry in a CRIS ELF linker hash table. */
848
849 static struct bfd_hash_entry *
850 elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
851 struct bfd_hash_table *table,
852 const char *string)
853 {
854 struct elf_cris_link_hash_entry *ret =
855 (struct elf_cris_link_hash_entry *) entry;
856
857 /* Allocate the structure if it has not already been allocated by a
858 subclass. */
859 if (ret == (struct elf_cris_link_hash_entry *) NULL)
860 ret = ((struct elf_cris_link_hash_entry *)
861 bfd_hash_allocate (table,
862 sizeof (struct elf_cris_link_hash_entry)));
863 if (ret == (struct elf_cris_link_hash_entry *) NULL)
864 return (struct bfd_hash_entry *) ret;
865
866 /* Call the allocation method of the superclass. */
867 ret = ((struct elf_cris_link_hash_entry *)
868 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
869 table, string));
870 if (ret != (struct elf_cris_link_hash_entry *) NULL)
871 {
872 ret->pcrel_relocs_copied = NULL;
873 ret->gotplt_refcount = 0;
874 ret->gotplt_offset = 0;
875 ret->dtp_refcount = 0;
876 ret->tprel_refcount = 0;
877 ret->reg_got_refcount = 0;
878 }
879
880 return (struct bfd_hash_entry *) ret;
881 }
882
883 /* Create a CRIS ELF linker hash table. */
884
885 static struct bfd_link_hash_table *
886 elf_cris_link_hash_table_create (bfd *abfd)
887 {
888 struct elf_cris_link_hash_table *ret;
889 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
890
891 ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt));
892 if (ret == (struct elf_cris_link_hash_table *) NULL)
893 return NULL;
894
895 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
896 elf_cris_link_hash_newfunc,
897 sizeof (struct elf_cris_link_hash_entry),
898 CRIS_ELF_DATA))
899 {
900 free (ret);
901 return NULL;
902 }
903
904 /* Initialize to skip over the first three entries in the gotplt; they
905 are used for run-time symbol evaluation. */
906 ret->next_gotplt_entry = 12;
907
908 return &ret->root.root;
909 }
910 \f
911 /* Perform a single relocation. By default we use the standard BFD
912 routines, with a few tweaks. */
913
914 static bfd_reloc_status_type
915 cris_final_link_relocate (reloc_howto_type * howto,
916 bfd * input_bfd,
917 asection * input_section,
918 bfd_byte * contents,
919 Elf_Internal_Rela * rel,
920 bfd_vma relocation)
921 {
922 bfd_reloc_status_type r;
923 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
924
925 /* PC-relative relocations are relative to the position *after*
926 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
927 not a single byte, since PC must be 16-bit-aligned. */
928 switch (r_type)
929 {
930 /* Check that the 16-bit GOT relocs are positive. */
931 case R_CRIS_16_GOTPLT:
932 case R_CRIS_16_GOT:
933 if ((bfd_signed_vma) relocation < 0)
934 return bfd_reloc_overflow;
935 break;
936
937 case R_CRIS_32_PLT_PCREL:
938 case R_CRIS_32_PCREL:
939 relocation -= 2;
940 /* Fall through. */
941 case R_CRIS_8_PCREL:
942 case R_CRIS_16_PCREL:
943 relocation -= 2;
944 break;
945
946 default:
947 break;
948 }
949
950 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
951 contents, rel->r_offset,
952 relocation, rel->r_addend);
953 return r;
954 }
955 \f
956
957 /* The number of errors left before we stop outputting reloc-specific
958 explanatory messages. By coincidence, this works nicely together
959 with the default number of messages you'll get from LD about
960 "relocation truncated to fit" messages before you get an
961 "additional relocation overflows omitted from the output". */
962 static int additional_relocation_error_msg_count = 10;
963
964 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
965 copied, for further comments. */
966
967 static bfd_boolean
968 cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
969 struct bfd_link_info *info,
970 bfd *input_bfd,
971 asection *input_section,
972 bfd_byte *contents,
973 Elf_Internal_Rela *relocs,
974 Elf_Internal_Sym *local_syms,
975 asection **local_sections)
976 {
977 struct elf_cris_link_hash_table * htab;
978 bfd *dynobj;
979 Elf_Internal_Shdr *symtab_hdr;
980 struct elf_link_hash_entry **sym_hashes;
981 bfd_vma *local_got_offsets;
982 asection *sgot;
983 asection *splt;
984 asection *sreloc;
985 Elf_Internal_Rela *rel;
986 Elf_Internal_Rela *relend;
987 asection *srelgot;
988
989 htab = elf_cris_hash_table (info);
990 if (htab == NULL)
991 return FALSE;
992
993 dynobj = htab->root.dynobj;
994 local_got_offsets = elf_local_got_offsets (input_bfd);
995 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
996 sym_hashes = elf_sym_hashes (input_bfd);
997 relend = relocs + input_section->reloc_count;
998
999 sgot = NULL;
1000 splt = NULL;
1001 sreloc = NULL;
1002 srelgot = NULL;
1003
1004 if (dynobj != NULL)
1005 {
1006 splt = htab->root.splt;
1007 sgot = htab->root.sgot;
1008 }
1009
1010 for (rel = relocs; rel < relend; rel ++)
1011 {
1012 reloc_howto_type *howto;
1013 unsigned long r_symndx;
1014 Elf_Internal_Sym *sym;
1015 asection *sec;
1016 struct elf_link_hash_entry *h;
1017 bfd_vma relocation;
1018 bfd_reloc_status_type r;
1019 const char *symname = NULL;
1020 enum elf_cris_reloc_type r_type;
1021
1022 r_type = ELF32_R_TYPE (rel->r_info);
1023
1024 if ( r_type == R_CRIS_GNU_VTINHERIT
1025 || r_type == R_CRIS_GNU_VTENTRY)
1026 continue;
1027
1028 r_symndx = ELF32_R_SYM (rel->r_info);
1029 howto = cris_elf_howto_table + r_type;
1030 h = NULL;
1031 sym = NULL;
1032 sec = NULL;
1033
1034 if (r_symndx < symtab_hdr->sh_info)
1035 {
1036 sym = local_syms + r_symndx;
1037 sec = local_sections [r_symndx];
1038 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1039
1040 symname = (bfd_elf_string_from_elf_section
1041 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1042 if (symname == NULL)
1043 symname = bfd_section_name (input_bfd, sec);
1044 }
1045 else
1046 {
1047 bfd_boolean warned, ignored;
1048 bfd_boolean unresolved_reloc;
1049
1050 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1051 r_symndx, symtab_hdr, sym_hashes,
1052 h, sec, relocation,
1053 unresolved_reloc, warned, ignored);
1054
1055 symname = h->root.root.string;
1056
1057 if (unresolved_reloc
1058 /* Perhaps we should detect the cases that
1059 sec->output_section is expected to be NULL like i386 and
1060 m68k, but apparently (and according to elfxx-ia64.c) all
1061 valid cases are where the symbol is defined in a shared
1062 object which we link dynamically against. This includes
1063 PLT relocs for which we've created a PLT entry and other
1064 relocs for which we're prepared to create dynamic
1065 relocations.
1066
1067 For now, new situations cause us to just err when
1068 sec->output_offset is NULL but the object with the symbol
1069 is *not* dynamically linked against. Thus this will
1070 automatically remind us so we can see if there are other
1071 valid cases we need to revisit. */
1072 && (sec->owner->flags & DYNAMIC) != 0)
1073 relocation = 0;
1074
1075 else if (h->root.type == bfd_link_hash_defined
1076 || h->root.type == bfd_link_hash_defweak)
1077 {
1078 /* Here follow the cases where the relocation value must
1079 be zero (or when further handling is simplified when
1080 zero). I can't claim to understand the various
1081 conditions and they weren't described in the files
1082 where I copied them from (elf32-m68k.c and
1083 elf32-i386.c), but let's mention examples of where
1084 they happen. FIXME: Perhaps define and use a
1085 dynamic_symbol_p function like ia64.
1086
1087 - When creating a shared library, we can have an
1088 ordinary relocation for a symbol defined in a shared
1089 library (perhaps the one we create). We then make
1090 the relocation value zero, as the value seen now will
1091 be added into the relocation addend in this shared
1092 library, but must be handled only at dynamic-link
1093 time. FIXME: Not sure this example covers the
1094 h->elf_link_hash_flags test, though it's there in
1095 other targets. */
1096 if (bfd_link_pic (info)
1097 && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1098 || !h->def_regular)
1099 && (input_section->flags & SEC_ALLOC) != 0
1100 && (r_type == R_CRIS_8
1101 || r_type == R_CRIS_16
1102 || r_type == R_CRIS_32
1103 || r_type == R_CRIS_8_PCREL
1104 || r_type == R_CRIS_16_PCREL
1105 || r_type == R_CRIS_32_PCREL))
1106 relocation = 0;
1107 else if (!bfd_link_relocatable (info) && unresolved_reloc
1108 && (_bfd_elf_section_offset (output_bfd, info,
1109 input_section,
1110 rel->r_offset)
1111 != (bfd_vma) -1))
1112 {
1113 _bfd_error_handler
1114 /* xgettext:c-format */
1115 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1116 input_bfd,
1117 input_section,
1118 cris_elf_howto_table[r_type].name,
1119 symname);
1120 bfd_set_error (bfd_error_bad_value);
1121 return FALSE;
1122 }
1123 }
1124 }
1125
1126 if (sec != NULL && discarded_section (sec))
1127 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1128 rel, 1, relend, howto, 0, contents);
1129
1130 if (bfd_link_relocatable (info))
1131 continue;
1132
1133 switch (r_type)
1134 {
1135 case R_CRIS_16_GOTPLT:
1136 case R_CRIS_32_GOTPLT:
1137 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1138 but we require a PLT, and the PLT handling will take care of
1139 filling in the PLT-specific GOT entry. For the GOT offset,
1140 calculate it as we do when filling it in for the .got.plt
1141 section. If we don't have a PLT, punt to GOT handling. */
1142 if (h != NULL
1143 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1144 {
1145 asection *sgotplt = htab->root.sgotplt;
1146 bfd_vma got_offset;
1147
1148 BFD_ASSERT (h->dynindx != -1);
1149 BFD_ASSERT (sgotplt != NULL);
1150
1151 got_offset
1152 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1153
1154 relocation = got_offset;
1155 break;
1156 }
1157
1158 /* We didn't make a PLT entry for this symbol. Maybe everything is
1159 folded into the GOT. Other than folding, this happens when
1160 statically linking PIC code, or when using -Bsymbolic. Check
1161 that we instead have a GOT entry as done for us by
1162 elf_cris_adjust_dynamic_symbol, and drop through into the
1163 ordinary GOT cases. This must not happen for the
1164 executable, because any reference it does to a function
1165 that is satisfied by a DSO must generate a PLT. We assume
1166 these call-specific relocs don't address non-functions. */
1167 if (h != NULL
1168 && (h->got.offset == (bfd_vma) -1
1169 || (!bfd_link_pic (info)
1170 && !(h->def_regular
1171 || (!h->def_dynamic
1172 && h->root.type == bfd_link_hash_undefweak)))))
1173 {
1174 _bfd_error_handler
1175 ((h->got.offset == (bfd_vma) -1)
1176 /* xgettext:c-format */
1177 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1178 " against symbol `%s'")
1179 /* xgettext:c-format */
1180 : _("%B, section %A: No PLT for relocation %s"
1181 " against symbol `%s'"),
1182 input_bfd,
1183 input_section,
1184 cris_elf_howto_table[r_type].name,
1185 (symname != NULL && symname[0] != '\0'
1186 ? symname : _("[whose name is lost]")));
1187
1188 /* FIXME: Perhaps blaming input is not the right thing to
1189 do; this is probably an internal error. But it is true
1190 that we didn't like that particular input. */
1191 bfd_set_error (bfd_error_bad_value);
1192 return FALSE;
1193 }
1194 /* Fall through. */
1195
1196 /* The size of the actual relocation is not used here; we only
1197 fill in the GOT table here. */
1198 case R_CRIS_16_GOT:
1199 case R_CRIS_32_GOT:
1200 {
1201 bfd_vma off;
1202
1203 /* Note that despite using RELA relocations, the .got contents
1204 is always filled in with the link-relative relocation
1205 value; the addend. */
1206
1207 if (h != NULL)
1208 {
1209 off = h->got.offset;
1210 BFD_ASSERT (off != (bfd_vma) -1);
1211
1212 if (!elf_hash_table (info)->dynamic_sections_created
1213 || (! bfd_link_pic (info)
1214 && (h->def_regular
1215 || h->type == STT_FUNC
1216 || h->needs_plt))
1217 || (bfd_link_pic (info)
1218 && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
1219 && h->def_regular))
1220 {
1221 /* This wasn't checked above for ! bfd_link_pic (info), but
1222 must hold there if we get here; the symbol must
1223 be defined in the regular program or be undefweak
1224 or be a function or otherwise need a PLT. */
1225 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1226 || bfd_link_pic (info)
1227 || h->def_regular
1228 || h->type == STT_FUNC
1229 || h->needs_plt
1230 || h->root.type == bfd_link_hash_undefweak);
1231
1232 /* This is actually a static link, or it is a
1233 -Bsymbolic link and the symbol is defined locally,
1234 or is undefweak, or the symbol was forced to be
1235 local because of a version file, or we're not
1236 creating a dynamic object. We must initialize this
1237 entry in the global offset table. Since the offset
1238 must always be a multiple of 4, we use the least
1239 significant bit to record whether we have
1240 initialized it already.
1241
1242 If this GOT entry should be runtime-initialized, we
1243 will create a .rela.got relocation entry to
1244 initialize the value. This is done in the
1245 finish_dynamic_symbol routine. */
1246 if ((off & 1) != 0)
1247 off &= ~1;
1248 else
1249 {
1250 bfd_put_32 (output_bfd, relocation,
1251 sgot->contents + off);
1252 h->got.offset |= 1;
1253 }
1254 }
1255 }
1256 else
1257 {
1258 BFD_ASSERT (local_got_offsets != NULL
1259 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1260
1261 off = local_got_offsets[r_symndx];
1262
1263 /* The offset must always be a multiple of 4. We use
1264 the least significant bit to record whether we have
1265 already generated the necessary reloc. */
1266 if ((off & 1) != 0)
1267 off &= ~1;
1268 else
1269 {
1270 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1271
1272 if (bfd_link_pic (info))
1273 {
1274 Elf_Internal_Rela outrel;
1275 bfd_byte *loc;
1276
1277 srelgot = htab->root.srelgot;
1278 BFD_ASSERT (srelgot != NULL);
1279
1280 outrel.r_offset = (sgot->output_section->vma
1281 + sgot->output_offset
1282 + off);
1283 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1284 outrel.r_addend = relocation;
1285 loc = srelgot->contents;
1286 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1287 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1288 }
1289
1290 local_got_offsets[r_symndx] |= 1;
1291 }
1292 }
1293
1294 relocation = sgot->output_offset + off;
1295 if (rel->r_addend != 0)
1296 {
1297 /* We can't do anything for a relocation which is against
1298 a symbol *plus offset*. GOT holds relocations for
1299 symbols. Make this an error; the compiler isn't
1300 allowed to pass us these kinds of things. */
1301 if (h == NULL)
1302 _bfd_error_handler
1303 /* xgettext:c-format */
1304 (_("%B, section %A: relocation %s with non-zero addend %d"
1305 " against local symbol"),
1306 input_bfd,
1307 input_section,
1308 cris_elf_howto_table[r_type].name,
1309 rel->r_addend);
1310 else
1311 _bfd_error_handler
1312 /* xgettext:c-format */
1313 (_("%B, section %A: relocation %s with non-zero addend %d"
1314 " against symbol `%s'"),
1315 input_bfd,
1316 input_section,
1317 cris_elf_howto_table[r_type].name,
1318 rel->r_addend,
1319 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1320
1321 bfd_set_error (bfd_error_bad_value);
1322 return FALSE;
1323 }
1324 }
1325 break;
1326
1327 case R_CRIS_32_GOTREL:
1328 /* This relocation must only be performed against local symbols.
1329 It's also ok when we link a program and the symbol is either
1330 defined in an ordinary (non-DSO) object or is undefined weak. */
1331 if (h != NULL
1332 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1333 && !(!bfd_link_pic (info)
1334 && (h->def_regular
1335 || (!h->def_dynamic
1336 && h->root.type == bfd_link_hash_undefweak))))
1337 {
1338 _bfd_error_handler
1339 /* xgettext:c-format */
1340 (_("%B, section %A: relocation %s is"
1341 " not allowed for global symbol: `%s'"),
1342 input_bfd,
1343 input_section,
1344 cris_elf_howto_table[r_type].name,
1345 symname);
1346 bfd_set_error (bfd_error_bad_value);
1347 return FALSE;
1348 }
1349
1350 /* This can happen if we get a link error with the input ELF
1351 variant mismatching the output variant. Emit an error so
1352 it's noticed if it happens elsewhere. */
1353 if (sgot == NULL)
1354 {
1355 _bfd_error_handler
1356 /* xgettext:c-format */
1357 (_("%B, section %A: relocation %s with no GOT created"),
1358 input_bfd,
1359 input_section,
1360 cris_elf_howto_table[r_type].name);
1361 bfd_set_error (bfd_error_bad_value);
1362 return FALSE;
1363 }
1364
1365 /* This relocation is like a PC-relative one, except the
1366 reference point is the location of GOT. Note that
1367 sgot->output_offset is not involved in this calculation. We
1368 always want the start of entire .got section, not the
1369 position after the reserved header. */
1370 relocation -= sgot->output_section->vma;
1371 break;
1372
1373 case R_CRIS_32_PLT_PCREL:
1374 /* Relocation is to the entry for this symbol in the
1375 procedure linkage table. */
1376
1377 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1378 without using the procedure linkage table. */
1379 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1380 break;
1381
1382 if (h->plt.offset == (bfd_vma) -1
1383 || splt == NULL)
1384 {
1385 /* We didn't make a PLT entry for this symbol. This
1386 happens when statically linking PIC code, or when
1387 using -Bsymbolic. */
1388 break;
1389 }
1390
1391 relocation = (splt->output_section->vma
1392 + splt->output_offset
1393 + h->plt.offset);
1394 break;
1395
1396 case R_CRIS_32_PLT_GOTREL:
1397 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1398 start of the .got section. See also comment at
1399 R_CRIS_32_GOT. */
1400 relocation -= sgot->output_section->vma;
1401
1402 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1403 without using the procedure linkage table. */
1404 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1405 break;
1406
1407 if (h->plt.offset == (bfd_vma) -1
1408 || splt == NULL)
1409 {
1410 /* We didn't make a PLT entry for this symbol. This
1411 happens when statically linking PIC code, or when
1412 using -Bsymbolic. */
1413 break;
1414 }
1415
1416 relocation = (splt->output_section->vma
1417 + splt->output_offset
1418 + h->plt.offset
1419 - sgot->output_section->vma);
1420 break;
1421
1422 case R_CRIS_8_PCREL:
1423 case R_CRIS_16_PCREL:
1424 case R_CRIS_32_PCREL:
1425 /* If the symbol was local, we need no shlib-specific handling. */
1426 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1427 || h->dynindx == -1)
1428 break;
1429
1430 /* Fall through. */
1431 case R_CRIS_8:
1432 case R_CRIS_16:
1433 case R_CRIS_32:
1434 if (bfd_link_pic (info)
1435 && r_symndx != STN_UNDEF
1436 && (input_section->flags & SEC_ALLOC) != 0
1437 && ((r_type != R_CRIS_8_PCREL
1438 && r_type != R_CRIS_16_PCREL
1439 && r_type != R_CRIS_32_PCREL)
1440 || (!SYMBOLIC_BIND (info, h)
1441 || (h != NULL && !h->def_regular))))
1442 {
1443 Elf_Internal_Rela outrel;
1444 bfd_byte *loc;
1445 bfd_boolean skip, relocate;
1446
1447 /* When generating a shared object, these relocations
1448 are copied into the output file to be resolved at run
1449 time. */
1450
1451 if (sreloc == NULL)
1452 {
1453 sreloc = _bfd_elf_get_dynamic_reloc_section
1454 (dynobj, input_section, /*rela?*/ TRUE);
1455 /* The section should have been created in cris_elf_check_relocs,
1456 but that function will not be called for objects which fail in
1457 cris_elf_merge_private_bfd_data. */
1458 if (sreloc == NULL)
1459 {
1460 bfd_set_error (bfd_error_bad_value);
1461 return FALSE;
1462 }
1463 }
1464
1465 skip = FALSE;
1466 relocate = FALSE;
1467
1468 outrel.r_offset =
1469 _bfd_elf_section_offset (output_bfd, info, input_section,
1470 rel->r_offset);
1471 if (outrel.r_offset == (bfd_vma) -1)
1472 skip = TRUE;
1473 else if (outrel.r_offset == (bfd_vma) -2
1474 /* For now, undefined weak symbols with non-default
1475 visibility (yielding 0), like exception info for
1476 discarded sections, will get a R_CRIS_NONE
1477 relocation rather than no relocation, because we
1478 notice too late that the symbol doesn't need a
1479 relocation. */
1480 || (h != NULL
1481 && h->root.type == bfd_link_hash_undefweak
1482 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1483 skip = TRUE, relocate = TRUE;
1484 outrel.r_offset += (input_section->output_section->vma
1485 + input_section->output_offset);
1486
1487 if (skip)
1488 memset (&outrel, 0, sizeof outrel);
1489 /* h->dynindx may be -1 if the symbol was marked to
1490 become local. */
1491 else if (h != NULL
1492 && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1493 || !h->def_regular))
1494 {
1495 BFD_ASSERT (h->dynindx != -1);
1496 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1497 outrel.r_addend = relocation + rel->r_addend;
1498 }
1499 else
1500 {
1501 outrel.r_addend = relocation + rel->r_addend;
1502
1503 if (r_type == R_CRIS_32)
1504 {
1505 relocate = TRUE;
1506 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1507 }
1508 else
1509 {
1510 long indx;
1511
1512 if (bfd_is_abs_section (sec))
1513 indx = 0;
1514 else if (sec == NULL || sec->owner == NULL)
1515 {
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1518 }
1519 else
1520 {
1521 asection *osec;
1522
1523 /* We are turning this relocation into one
1524 against a section symbol. It would be
1525 proper to subtract the symbol's value,
1526 osec->vma, from the emitted reloc addend,
1527 but ld.so expects buggy relocs. */
1528 osec = sec->output_section;
1529 indx = elf_section_data (osec)->dynindx;
1530 if (indx == 0)
1531 {
1532 osec = htab->root.text_index_section;
1533 indx = elf_section_data (osec)->dynindx;
1534 }
1535 BFD_ASSERT (indx != 0);
1536 }
1537
1538 outrel.r_info = ELF32_R_INFO (indx, r_type);
1539 }
1540 }
1541
1542 loc = sreloc->contents;
1543 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1544 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1545
1546 /* This reloc will be computed at runtime, so there's no
1547 need to do anything now, except for R_CRIS_32 relocations
1548 that have been turned into R_CRIS_RELATIVE. */
1549 if (!relocate)
1550 continue;
1551 }
1552
1553 break;
1554
1555 case R_CRIS_16_DTPREL:
1556 case R_CRIS_32_DTPREL:
1557 /* This relocation must only be performed against local
1558 symbols, or to sections that are not loadable. It's also
1559 ok when we link a program and the symbol is defined in an
1560 ordinary (non-DSO) object (if it's undefined there, we've
1561 already seen an error). */
1562 if (h != NULL
1563 && (input_section->flags & SEC_ALLOC) != 0
1564 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1565 && (bfd_link_pic (info)
1566 || (!h->def_regular
1567 && h->root.type != bfd_link_hash_undefined)))
1568 {
1569 _bfd_error_handler
1570 ((h->root.type == bfd_link_hash_undefined)
1571 /* We shouldn't get here for GCC-emitted code. */
1572 /* xgettext:c-format */
1573 ? _("%B, section %A: relocation %s has an undefined"
1574 " reference to `%s', perhaps a declaration mixup?")
1575 /* xgettext:c-format */
1576 : _("%B, section %A: relocation %s is"
1577 " not allowed for `%s', a global symbol with default"
1578 " visibility, perhaps a declaration mixup?"),
1579 input_bfd,
1580 input_section,
1581 cris_elf_howto_table[r_type].name,
1582 symname != NULL && symname[0] != '\0'
1583 ? symname : _("[whose name is lost]"));
1584 bfd_set_error (bfd_error_bad_value);
1585 return FALSE;
1586 }
1587
1588 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1589 || htab->dtpmod_refcount != 0);
1590
1591 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1592 already done so. Note that we do this in .got.plt, not
1593 in .got, as .got.plt contains the first part, still the
1594 reloc is against .got, because the linker script directs
1595 (is required to direct) them both into .got. */
1596 if (htab->dtpmod_refcount > 0
1597 && (input_section->flags & SEC_ALLOC) != 0)
1598 {
1599 asection *sgotplt = htab->root.sgotplt;
1600 BFD_ASSERT (sgotplt != NULL);
1601
1602 if (bfd_link_pic (info))
1603 {
1604 Elf_Internal_Rela outrel;
1605 bfd_byte *loc;
1606
1607 srelgot = htab->root.srelgot;
1608 BFD_ASSERT (srelgot != NULL);
1609 loc = srelgot->contents;
1610 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1611
1612 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1613 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1614 outrel.r_offset = (sgotplt->output_section->vma
1615 + sgotplt->output_offset
1616 + 12);
1617 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1618 outrel.r_addend = 0;
1619 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1620 }
1621 else
1622 {
1623 /* For an executable, the GOT entry contents is known. */
1624 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1625 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1626 }
1627
1628 /* Reverse the sign to mark that we've emitted the
1629 required GOT entry. */
1630 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1631 }
1632
1633 /* The relocation is the offset from the start of the module
1634 TLS block to the (local) symbol. */
1635 relocation -= elf_hash_table (info)->tls_sec == NULL
1636 ? 0 : elf_hash_table (info)->tls_sec->vma;
1637 break;
1638
1639 case R_CRIS_32_GD:
1640 if (bfd_link_pic (info))
1641 {
1642 bfd_set_error (bfd_error_invalid_operation);
1643
1644 /* We've already informed in cris_elf_check_relocs that
1645 this is an error. */
1646 return FALSE;
1647 }
1648 /* Fall through. */
1649
1650 case R_CRIS_16_GOT_GD:
1651 case R_CRIS_32_GOT_GD:
1652 if (rel->r_addend != 0)
1653 {
1654 /* We can't do anything for a relocation which is against a
1655 symbol *plus offset*. The GOT holds relocations for
1656 symbols. Make this an error; the compiler isn't allowed
1657 to pass us these kinds of things. */
1658 _bfd_error_handler
1659 /* xgettext:c-format */
1660 (_("%B, section %A: relocation %s with non-zero addend %d"
1661 " against symbol `%s'"),
1662 input_bfd,
1663 input_section,
1664 cris_elf_howto_table[r_type].name,
1665 rel->r_addend,
1666 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1667
1668 bfd_set_error (bfd_error_bad_value);
1669 return FALSE;
1670 }
1671
1672 if (!bfd_link_pic (info)
1673 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1674 {
1675 /* Known contents of the GOT. */
1676 bfd_vma off;
1677
1678 /* The symbol is defined in the program, so just write
1679 (1, known_tpoffset) into the GOT. */
1680 relocation -= elf_hash_table (info)->tls_sec->vma;
1681
1682 if (h != NULL)
1683 {
1684 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1685 ? h->got.offset + 4 : h->got.offset;
1686 }
1687 else
1688 {
1689 off = local_got_offsets[r_symndx];
1690 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1691 off += 4;
1692 }
1693
1694 /* We use bit 1 of the offset as a flag for GOT entry with
1695 the R_CRIS_DTP reloc, setting it when we've emitted the
1696 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1697 relocs. */
1698 if ((off & 2) == 0)
1699 {
1700 off &= ~3;
1701
1702 if (h != NULL)
1703 h->got.offset |= 2;
1704 else
1705 local_got_offsets[r_symndx] |= 2;
1706
1707 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1708 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1709 }
1710 else
1711 off &= ~3;
1712
1713 relocation = sgot->output_offset + off
1714 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1715 }
1716 else
1717 {
1718 /* Not all parts of the GOT entry are known; emit a real
1719 relocation. */
1720 bfd_vma off;
1721
1722 if (h != NULL)
1723 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1724 ? h->got.offset + 4 : h->got.offset;
1725 else
1726 {
1727 off = local_got_offsets[r_symndx];
1728 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1729 off += 4;
1730 }
1731
1732 /* See above re bit 1 and bit 0 usage. */
1733 if ((off & 2) == 0)
1734 {
1735 Elf_Internal_Rela outrel;
1736 bfd_byte *loc;
1737
1738 off &= ~3;
1739
1740 if (h != NULL)
1741 h->got.offset |= 2;
1742 else
1743 local_got_offsets[r_symndx] |= 2;
1744
1745 /* Clear the target contents of the GOT (just as a
1746 gesture; it's already cleared on allocation): this
1747 relocation is not like the other dynrelocs. */
1748 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1749 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1750
1751 srelgot = htab->root.srelgot;
1752 BFD_ASSERT (srelgot != NULL);
1753
1754 if (h != NULL && h->dynindx != -1)
1755 {
1756 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1757 relocation = 0;
1758 }
1759 else
1760 {
1761 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1762
1763 /* NULL if we had an error. */
1764 relocation -= elf_hash_table (info)->tls_sec == NULL
1765 ? 0 : elf_hash_table (info)->tls_sec->vma;
1766 }
1767
1768 outrel.r_offset = (sgot->output_section->vma
1769 + sgot->output_offset
1770 + off);
1771 outrel.r_addend = relocation;
1772 loc = srelgot->contents;
1773 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1774
1775 /* NULL if we had an error. */
1776 if (srelgot->contents != NULL)
1777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1778 }
1779 else
1780 off &= ~3;
1781
1782 relocation = sgot->output_offset + off
1783 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1784 }
1785
1786 /* The GOT-relative offset to the GOT entry is the
1787 relocation, or for R_CRIS_32_GD, the actual address of
1788 the GOT entry. */
1789 break;
1790
1791 case R_CRIS_32_IE:
1792 if (bfd_link_pic (info))
1793 {
1794 bfd_set_error (bfd_error_invalid_operation);
1795
1796 /* We've already informed in cris_elf_check_relocs that
1797 this is an error. */
1798 return FALSE;
1799 }
1800 /* Fall through. */
1801
1802 case R_CRIS_32_GOT_TPREL:
1803 case R_CRIS_16_GOT_TPREL:
1804 if (rel->r_addend != 0)
1805 {
1806 /* We can't do anything for a relocation which is
1807 against a symbol *plus offset*. GOT holds
1808 relocations for symbols. Make this an error; the
1809 compiler isn't allowed to pass us these kinds of
1810 things. */
1811 _bfd_error_handler
1812 /* xgettext:c-format */
1813 (_("%B, section %A: relocation %s with non-zero addend %d"
1814 " against symbol `%s'"),
1815 input_bfd,
1816 input_section,
1817 cris_elf_howto_table[r_type].name,
1818 rel->r_addend,
1819 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1820 bfd_set_error (bfd_error_bad_value);
1821 return FALSE;
1822 }
1823
1824 if (!bfd_link_pic (info)
1825 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1826 {
1827 /* Known contents of the GOT. */
1828 bfd_vma off;
1829
1830 /* The symbol is defined in the program, so just write
1831 the -prog_tls_size+known_tpoffset into the GOT. */
1832 relocation -= elf_hash_table (info)->tls_sec->vma;
1833 relocation -= elf_hash_table (info)->tls_size;
1834
1835 if (h != NULL)
1836 off = h->got.offset;
1837 else
1838 off = local_got_offsets[r_symndx];
1839
1840 /* Bit 0 is used to mark whether we've emitted the required
1841 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1842 is used similarly for R_CRIS_DTP, see above. */
1843 if ((off & 1) == 0)
1844 {
1845 off &= ~3;
1846
1847 if (h != NULL)
1848 h->got.offset |= 1;
1849 else
1850 local_got_offsets[r_symndx] |= 1;
1851
1852 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1853 }
1854 else
1855 off &= ~3;
1856
1857 relocation = sgot->output_offset + off
1858 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1859 }
1860 else
1861 {
1862 /* Emit a real relocation. */
1863 bfd_vma off;
1864
1865 if (h != NULL)
1866 off = h->got.offset;
1867 else
1868 off = local_got_offsets[r_symndx];
1869
1870 /* See above re usage of bit 0 and 1. */
1871 if ((off & 1) == 0)
1872 {
1873 Elf_Internal_Rela outrel;
1874 bfd_byte *loc;
1875
1876 off &= ~3;
1877
1878 if (h != NULL)
1879 h->got.offset |= 1;
1880 else
1881 local_got_offsets[r_symndx] |= 1;
1882
1883 srelgot = htab->root.srelgot;
1884 BFD_ASSERT (srelgot != NULL);
1885
1886 if (h != NULL && h->dynindx != -1)
1887 {
1888 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1889 relocation = 0;
1890 }
1891 else
1892 {
1893 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1894
1895 /* NULL if we had an error. */
1896 relocation -= elf_hash_table (info)->tls_sec == NULL
1897 ? 0 : elf_hash_table (info)->tls_sec->vma;
1898 }
1899
1900 /* Just "define" the initial contents in some
1901 semi-logical way. */
1902 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1903
1904 outrel.r_offset = (sgot->output_section->vma
1905 + sgot->output_offset
1906 + off);
1907 outrel.r_addend = relocation;
1908 loc = srelgot->contents;
1909 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1910 /* NULL if we had an error. */
1911 if (srelgot->contents != NULL)
1912 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1913 }
1914 else
1915 off &= ~3;
1916
1917 relocation = sgot->output_offset + off
1918 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1919 }
1920
1921 /* The GOT-relative offset to the GOT entry is the relocation,
1922 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1923 break;
1924
1925 case R_CRIS_16_TPREL:
1926 case R_CRIS_32_TPREL:
1927 /* This relocation must only be performed against symbols
1928 defined in an ordinary (non-DSO) object. */
1929 if (bfd_link_pic (info))
1930 {
1931 bfd_set_error (bfd_error_invalid_operation);
1932
1933 /* We've already informed in cris_elf_check_relocs that
1934 this is an error. */
1935 return FALSE;
1936 }
1937
1938 if (h != NULL
1939 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1940 && !(h->def_regular || ELF_COMMON_DEF_P (h))
1941 /* If it's undefined, then an error message has already
1942 been emitted. */
1943 && h->root.type != bfd_link_hash_undefined)
1944 {
1945 _bfd_error_handler
1946 /* xgettext:c-format */
1947 (_("%B, section %A: relocation %s is"
1948 " not allowed for symbol: `%s'"
1949 " which is defined outside the program,"
1950 " perhaps a declaration mixup?"),
1951 input_bfd,
1952 input_section,
1953 cris_elf_howto_table[r_type].name,
1954 symname);
1955 bfd_set_error (bfd_error_bad_value);
1956 return FALSE;
1957 }
1958
1959 /* NULL if we had an error. */
1960 relocation -= elf_hash_table (info)->tls_sec == NULL
1961 ? 0
1962 : (elf_hash_table (info)->tls_sec->vma
1963 + elf_hash_table (info)->tls_size);
1964
1965 /* The TLS-relative offset is the relocation. */
1966 break;
1967
1968 default:
1969 BFD_FAIL ();
1970 return FALSE;
1971 }
1972
1973 r = cris_final_link_relocate (howto, input_bfd, input_section,
1974 contents, rel, relocation);
1975
1976 if (r != bfd_reloc_ok)
1977 {
1978 const char * msg = (const char *) NULL;
1979
1980 switch (r)
1981 {
1982 case bfd_reloc_overflow:
1983 (*info->callbacks->reloc_overflow)
1984 (info, (h ? &h->root : NULL), symname, howto->name,
1985 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1986 if (additional_relocation_error_msg_count > 0)
1987 {
1988 additional_relocation_error_msg_count--;
1989 switch (r_type)
1990 {
1991 case R_CRIS_16_GOTPLT:
1992 case R_CRIS_16_GOT:
1993
1994 /* Not just TLS is involved here, so we make
1995 generation and message depend on -fPIC/-fpic
1996 only. */
1997 case R_CRIS_16_GOT_TPREL:
1998 case R_CRIS_16_GOT_GD:
1999 _bfd_error_handler
2000 (_("(too many global variables for -fpic:"
2001 " recompile with -fPIC)"));
2002 break;
2003
2004 case R_CRIS_16_TPREL:
2005 case R_CRIS_16_DTPREL:
2006 _bfd_error_handler
2007 (_("(thread-local data too big for -fpic or"
2008 " -msmall-tls: recompile with -fPIC or"
2009 " -mno-small-tls)"));
2010 break;
2011
2012 /* No known cause for overflow for other relocs. */
2013 default:
2014 break;
2015 }
2016 }
2017 break;
2018
2019 case bfd_reloc_undefined:
2020 (*info->callbacks->undefined_symbol)
2021 (info, symname, input_bfd, input_section, rel->r_offset, TRUE);
2022 break;
2023
2024 case bfd_reloc_outofrange:
2025 msg = _("internal error: out of range error");
2026 break;
2027
2028 case bfd_reloc_notsupported:
2029 msg = _("internal error: unsupported relocation error");
2030 break;
2031
2032 case bfd_reloc_dangerous:
2033 msg = _("internal error: dangerous relocation");
2034 break;
2035
2036 default:
2037 msg = _("internal error: unknown error");
2038 break;
2039 }
2040
2041 if (msg)
2042 (*info->callbacks->warning) (info, msg, symname, input_bfd,
2043 input_section, rel->r_offset);
2044 }
2045 }
2046
2047 return TRUE;
2048 }
2049 \f
2050 /* Finish up dynamic symbol handling. We set the contents of various
2051 dynamic sections here. */
2052
2053 static bfd_boolean
2054 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2055 struct bfd_link_info *info,
2056 struct elf_link_hash_entry *h,
2057 Elf_Internal_Sym *sym)
2058 {
2059 struct elf_cris_link_hash_table * htab;
2060
2061 /* Where in the plt entry to put values. */
2062 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2063
2064 /* What offset to add to the distance to the first PLT entry for the
2065 value at plt_off3. */
2066 int plt_off3_value_bias = 4;
2067
2068 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2069 for PIC and non-PIC for v32 and pre-v32). */
2070 int plt_stub_offset = 8;
2071 int plt_entry_size = PLT_ENTRY_SIZE;
2072 const bfd_byte *plt_entry = elf_cris_plt_entry;
2073 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2074
2075 htab = elf_cris_hash_table (info);
2076 if (htab == NULL)
2077 return FALSE;
2078
2079 /* Adjust the various PLT entry offsets. */
2080 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2081 {
2082 plt_off2 = 14;
2083 plt_off3 = 20;
2084 plt_off3_value_bias = -2;
2085 plt_stub_offset = 12;
2086 plt_entry_size = PLT_ENTRY_SIZE_V32;
2087 plt_entry = elf_cris_plt_entry_v32;
2088 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2089 }
2090
2091 if (h->plt.offset != (bfd_vma) -1)
2092 {
2093 asection *splt;
2094 asection *sgotplt;
2095 asection *srela;
2096 bfd_vma got_base;
2097
2098 bfd_vma gotplt_offset
2099 = elf_cris_hash_entry (h)->gotplt_offset;
2100 Elf_Internal_Rela rela;
2101 bfd_byte *loc;
2102 bfd_boolean has_gotplt = gotplt_offset != 0;
2103
2104 /* Get the index in the .rela.plt relocations for the .got.plt
2105 entry that corresponds to this symbol.
2106 We have to count backwards here, and the result is only valid
2107 as an index into .rela.plt. We also have to undo the effect
2108 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2109 .got.plt) for which gotplt_offset is adjusted, because while
2110 that entry goes into .got.plt, its relocation goes into
2111 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2112 processed as part of the runtime lazy .rela.plt relocation).
2113 FIXME: There be literal constants here... */
2114 bfd_vma rela_plt_index
2115 = (htab->dtpmod_refcount != 0
2116 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2117
2118 /* Get the offset into the .got table of the entry that corresponds
2119 to this function. Note that we embed knowledge that "incoming"
2120 .got goes after .got.plt in the output without padding (pointer
2121 aligned). However, that knowledge is present in several other
2122 places too. */
2123 bfd_vma got_offset
2124 = (has_gotplt
2125 ? gotplt_offset
2126 : h->got.offset + htab->next_gotplt_entry);
2127
2128 /* This symbol has an entry in the procedure linkage table. Set it
2129 up. */
2130
2131 BFD_ASSERT (h->dynindx != -1);
2132
2133 splt = htab->root.splt;
2134 sgotplt = htab->root.sgotplt;
2135 srela = htab->root.srelplt;
2136 BFD_ASSERT (splt != NULL && sgotplt != NULL
2137 && (! has_gotplt || srela != NULL));
2138
2139 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2140
2141 /* Fill in the entry in the procedure linkage table. */
2142 if (! bfd_link_pic (info))
2143 {
2144 memcpy (splt->contents + h->plt.offset, plt_entry,
2145 plt_entry_size);
2146
2147 /* We need to enter the absolute address of the GOT entry here. */
2148 bfd_put_32 (output_bfd, got_base + got_offset,
2149 splt->contents + h->plt.offset + plt_off1);
2150 }
2151 else
2152 {
2153 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2154 plt_entry_size);
2155 bfd_put_32 (output_bfd, got_offset,
2156 splt->contents + h->plt.offset + plt_off1);
2157 }
2158
2159 /* Fill in the plt entry and make a relocation, if this is a "real"
2160 PLT entry. */
2161 if (has_gotplt)
2162 {
2163 /* Fill in the offset to the reloc table. */
2164 bfd_put_32 (output_bfd,
2165 rela_plt_index * sizeof (Elf32_External_Rela),
2166 splt->contents + h->plt.offset + plt_off2);
2167
2168 /* Fill in the offset to the first PLT entry, where to "jump". */
2169 bfd_put_32 (output_bfd,
2170 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2171 splt->contents + h->plt.offset + plt_off3);
2172
2173 /* Fill in the entry in the global offset table with the address of
2174 the relocating stub. */
2175 bfd_put_32 (output_bfd,
2176 (splt->output_section->vma
2177 + splt->output_offset
2178 + h->plt.offset
2179 + plt_stub_offset),
2180 sgotplt->contents + got_offset);
2181
2182 /* Fill in the entry in the .rela.plt section. */
2183 rela.r_offset = (sgotplt->output_section->vma
2184 + sgotplt->output_offset
2185 + got_offset);
2186 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2187 rela.r_addend = 0;
2188 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2189 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2190 }
2191
2192 if (!h->def_regular)
2193 {
2194 /* Mark the symbol as undefined, rather than as defined in
2195 the .plt section. Leave the value alone. */
2196 sym->st_shndx = SHN_UNDEF;
2197
2198 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2199 know whether resetting the value is significant; if it really
2200 is, rather than a quirk or bug in the sparc port, then I
2201 believe we'd see this elsewhere. */
2202 /* If the symbol is weak, we do need to clear the value.
2203 Otherwise, the PLT entry would provide a definition for
2204 the symbol even if the symbol wasn't defined anywhere,
2205 and so the symbol would never be NULL. */
2206 if (!h->ref_regular_nonweak)
2207 sym->st_value = 0;
2208 }
2209 }
2210
2211 /* For an ordinary program, we emit .got relocs only for symbols that
2212 are in the dynamic-symbols table and are either defined by the
2213 program or are undefined weak symbols, or are function symbols
2214 where we do not output a PLT: the PLT reloc was output above and all
2215 references to the function symbol are redirected to the PLT. */
2216 if (h->got.offset != (bfd_vma) -1
2217 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2218 && (bfd_link_pic (info)
2219 || (h->dynindx != -1
2220 && h->plt.offset == (bfd_vma) -1
2221 && !h->def_regular
2222 && h->root.type != bfd_link_hash_undefweak)))
2223 {
2224 asection *sgot;
2225 asection *srela;
2226 Elf_Internal_Rela rela;
2227 bfd_byte *loc;
2228 bfd_byte *where;
2229
2230 /* This symbol has an entry in the global offset table. Set it up. */
2231
2232 sgot = htab->root.sgot;
2233 srela = htab->root.srelgot;
2234 BFD_ASSERT (sgot != NULL && srela != NULL);
2235
2236 rela.r_offset = (sgot->output_section->vma
2237 + sgot->output_offset
2238 + (h->got.offset &~ (bfd_vma) 1));
2239
2240 /* If this is a static link, or it is a -Bsymbolic link and the
2241 symbol is defined locally or was forced to be local because
2242 of a version file, we just want to emit a RELATIVE reloc.
2243 The entry in the global offset table will already have been
2244 initialized in the relocate_section function. */
2245 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2246 if (! elf_hash_table (info)->dynamic_sections_created
2247 || (bfd_link_pic (info)
2248 && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
2249 && h->def_regular))
2250 {
2251 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2252 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2253 }
2254 else
2255 {
2256 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2257 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2258 rela.r_addend = 0;
2259 }
2260
2261 loc = srela->contents;
2262 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2264 }
2265
2266 if (h->needs_copy)
2267 {
2268 asection *s;
2269 Elf_Internal_Rela rela;
2270 bfd_byte *loc;
2271
2272 /* This symbol needs a copy reloc. Set it up. */
2273
2274 BFD_ASSERT (h->dynindx != -1
2275 && (h->root.type == bfd_link_hash_defined
2276 || h->root.type == bfd_link_hash_defweak));
2277
2278 if (h->root.u.def.section == htab->root.sdynrelro)
2279 s = htab->root.sreldynrelro;
2280 else
2281 s = htab->root.srelbss;
2282
2283 rela.r_offset = (h->root.u.def.value
2284 + h->root.u.def.section->output_section->vma
2285 + h->root.u.def.section->output_offset);
2286 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2287 rela.r_addend = 0;
2288 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2289 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2290 }
2291
2292 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2293 if (h == elf_hash_table (info)->hdynamic
2294 || h == elf_hash_table (info)->hgot)
2295 sym->st_shndx = SHN_ABS;
2296
2297 return TRUE;
2298 }
2299 \f
2300 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2301 offsets were changed, as part of -z combreloc handling, from those we
2302 computed. */
2303
2304 static bfd_boolean
2305 elf_cris_finish_dynamic_sections (bfd *output_bfd,
2306 struct bfd_link_info *info)
2307 {
2308 bfd *dynobj;
2309 asection *sgot;
2310 asection *sdyn;
2311
2312 dynobj = elf_hash_table (info)->dynobj;
2313
2314 sgot = elf_hash_table (info)->sgotplt;
2315 BFD_ASSERT (sgot != NULL);
2316 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2317
2318 if (elf_hash_table (info)->dynamic_sections_created)
2319 {
2320 asection *splt;
2321 Elf32_External_Dyn *dyncon, *dynconend;
2322
2323 splt = elf_hash_table (info)->splt;
2324 BFD_ASSERT (splt != NULL && sdyn != NULL);
2325
2326 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2327 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2328 for (; dyncon < dynconend; dyncon++)
2329 {
2330 Elf_Internal_Dyn dyn;
2331 asection *s;
2332
2333 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2334
2335 switch (dyn.d_tag)
2336 {
2337 default:
2338 break;
2339
2340 case DT_PLTGOT:
2341 dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset;
2342 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2343 break;
2344
2345 case DT_JMPREL:
2346 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2347 if all symbols are found in the .got (not .got.plt). */
2348 s = elf_hash_table (info)->srelplt;
2349 dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma
2350 + s->output_offset) : 0;
2351 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2352 break;
2353
2354 case DT_PLTRELSZ:
2355 s = elf_hash_table (info)->srelplt;
2356 if (s == NULL)
2357 dyn.d_un.d_val = 0;
2358 else
2359 dyn.d_un.d_val = s->size;
2360 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2361 break;
2362 }
2363 }
2364
2365 /* Fill in the first entry in the procedure linkage table. */
2366 if (splt->size > 0)
2367 {
2368 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2369 {
2370 if (bfd_link_pic (info))
2371 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2372 PLT_ENTRY_SIZE_V32);
2373 else
2374 {
2375 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2376 PLT_ENTRY_SIZE_V32);
2377 bfd_put_32 (output_bfd,
2378 sgot->output_section->vma
2379 + sgot->output_offset + 4,
2380 splt->contents + 4);
2381
2382 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2383 = PLT_ENTRY_SIZE_V32;
2384 }
2385 }
2386 else
2387 {
2388 if (bfd_link_pic (info))
2389 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2390 PLT_ENTRY_SIZE);
2391 else
2392 {
2393 memcpy (splt->contents, elf_cris_plt0_entry,
2394 PLT_ENTRY_SIZE);
2395 bfd_put_32 (output_bfd,
2396 sgot->output_section->vma
2397 + sgot->output_offset + 4,
2398 splt->contents + 6);
2399 bfd_put_32 (output_bfd,
2400 sgot->output_section->vma
2401 + sgot->output_offset + 8,
2402 splt->contents + 14);
2403
2404 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2405 = PLT_ENTRY_SIZE;
2406 }
2407 }
2408 }
2409 }
2410
2411 /* Fill in the first three entries in the global offset table. */
2412 if (sgot->size > 0)
2413 {
2414 if (sdyn == NULL)
2415 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2416 else
2417 bfd_put_32 (output_bfd,
2418 sdyn->output_section->vma + sdyn->output_offset,
2419 sgot->contents);
2420 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2421 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2422 }
2423
2424 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2425
2426 return TRUE;
2427 }
2428 \f
2429 /* Return the section that should be marked against GC for a given
2430 relocation. */
2431
2432 static asection *
2433 cris_elf_gc_mark_hook (asection *sec,
2434 struct bfd_link_info *info,
2435 Elf_Internal_Rela *rel,
2436 struct elf_link_hash_entry *h,
2437 Elf_Internal_Sym *sym)
2438 {
2439 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2440 if (h != NULL)
2441 switch (r_type)
2442 {
2443 case R_CRIS_GNU_VTINHERIT:
2444 case R_CRIS_GNU_VTENTRY:
2445 return NULL;
2446
2447 default:
2448 break;
2449 }
2450
2451 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2452 }
2453
2454 /* Update the got entry reference counts for the section being removed. */
2455
2456 static bfd_boolean
2457 cris_elf_gc_sweep_hook (bfd *abfd,
2458 struct bfd_link_info *info,
2459 asection *sec,
2460 const Elf_Internal_Rela *relocs)
2461 {
2462 struct elf_cris_link_hash_table * htab;
2463 Elf_Internal_Shdr *symtab_hdr;
2464 struct elf_link_hash_entry **sym_hashes;
2465 bfd_signed_vma *local_got_refcounts;
2466 const Elf_Internal_Rela *rel, *relend;
2467 bfd *dynobj;
2468 asection *sgot;
2469 asection *srelgot;
2470
2471 if (bfd_link_relocatable (info))
2472 return TRUE;
2473
2474 dynobj = elf_hash_table (info)->dynobj;
2475 if (dynobj == NULL)
2476 return TRUE;
2477
2478 htab = elf_cris_hash_table (info);
2479 if (htab == NULL)
2480 return FALSE;
2481
2482 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2483 sym_hashes = elf_sym_hashes (abfd);
2484 local_got_refcounts = elf_local_got_refcounts (abfd);
2485
2486 sgot = htab->root.sgot;
2487 srelgot = htab->root.srelgot;
2488
2489 relend = relocs + sec->reloc_count;
2490 for (rel = relocs; rel < relend; rel++)
2491 {
2492 unsigned long r_symndx;
2493 struct elf_link_hash_entry *h = NULL;
2494 bfd_signed_vma got_element_size = 4;
2495 bfd_signed_vma *specific_refcount = NULL;
2496 enum elf_cris_reloc_type r_type;
2497
2498 r_symndx = ELF32_R_SYM (rel->r_info);
2499 if (r_symndx >= symtab_hdr->sh_info)
2500 {
2501 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2502 while (h->root.type == bfd_link_hash_indirect
2503 || h->root.type == bfd_link_hash_warning)
2504 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2505 }
2506
2507 r_type = ELF32_R_TYPE (rel->r_info);
2508 switch (r_type)
2509 {
2510 case R_CRIS_32_GOT:
2511 case R_CRIS_16_GOT:
2512 case R_CRIS_16_GOTPLT:
2513 case R_CRIS_32_GOTPLT:
2514 specific_refcount = h != NULL
2515 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2516 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2517 break;
2518
2519 case R_CRIS_32_GD:
2520 case R_CRIS_32_GOT_GD:
2521 case R_CRIS_16_GOT_GD:
2522 got_element_size = 8;
2523 specific_refcount = h != NULL
2524 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2525 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2526 break;
2527
2528 case R_CRIS_32_IE:
2529 case R_CRIS_16_GOT_TPREL:
2530 case R_CRIS_32_GOT_TPREL:
2531 specific_refcount = h != NULL
2532 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2533 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2534 break;
2535
2536 default:
2537 break;
2538 }
2539
2540 switch (r_type)
2541 {
2542 case R_CRIS_32_IE:
2543 case R_CRIS_32_GD:
2544 case R_CRIS_16_GOT_TPREL:
2545 case R_CRIS_32_GOT_TPREL:
2546 case R_CRIS_32_GOT_GD:
2547 case R_CRIS_16_GOT_GD:
2548 case R_CRIS_16_GOT:
2549 case R_CRIS_32_GOT:
2550 if (h != NULL)
2551 {
2552 /* If the counters are 0 when we got here, we've
2553 miscounted somehow somewhere, an internal error. */
2554 BFD_ASSERT (h->got.refcount > 0);
2555 --h->got.refcount;
2556
2557 BFD_ASSERT (*specific_refcount > 0);
2558 --*specific_refcount;
2559 if (*specific_refcount == 0)
2560 {
2561 /* We don't need the .got entry any more. */
2562 sgot->size -= got_element_size;
2563 srelgot->size -= sizeof (Elf32_External_Rela);
2564 }
2565 break;
2566 }
2567
2568 local_got_reloc:
2569 if (local_got_refcounts != NULL)
2570 {
2571 /* If the counters are 0 when we got here, we've
2572 miscounted somehow somewhere, an internal error. */
2573 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2574 --local_got_refcounts[r_symndx];
2575
2576 BFD_ASSERT (*specific_refcount > 0);
2577 --*specific_refcount;
2578 if (*specific_refcount == 0)
2579 {
2580 /* We don't need the .got entry any more. */
2581 sgot->size -= got_element_size;
2582 if (bfd_link_pic (info))
2583 srelgot->size -= sizeof (Elf32_External_Rela);
2584 }
2585 }
2586 break;
2587
2588 case R_CRIS_16_GOTPLT:
2589 case R_CRIS_32_GOTPLT:
2590 /* For local symbols, treat these like GOT relocs. */
2591 if (h == NULL)
2592 goto local_got_reloc;
2593 else
2594 /* For global symbols, adjust the reloc-specific refcount. */
2595 elf_cris_hash_entry (h)->gotplt_refcount--;
2596 /* Fall through. */
2597
2598 case R_CRIS_32_PLT_GOTREL:
2599 /* FIXME: We don't garbage-collect away the .got section. */
2600 if (local_got_refcounts != NULL)
2601 local_got_refcounts[-1]--;
2602 /* Fall through. */
2603
2604 case R_CRIS_8:
2605 case R_CRIS_16:
2606 case R_CRIS_32:
2607 case R_CRIS_8_PCREL:
2608 case R_CRIS_16_PCREL:
2609 case R_CRIS_32_PCREL:
2610 case R_CRIS_32_PLT_PCREL:
2611 /* Negate the increment we did in cris_elf_check_relocs. */
2612 if (h != NULL)
2613 {
2614 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2615 && h->plt.refcount > 0)
2616 --h->plt.refcount;
2617 }
2618 break;
2619
2620 case R_CRIS_32_DTPREL:
2621 /* This'd be a .dtpreld entry in e.g. debug info. */
2622 if ((sec->flags & SEC_ALLOC) == 0)
2623 break;
2624 /* Fall through. */
2625 case R_CRIS_16_DTPREL:
2626 htab->dtpmod_refcount--;
2627 if (htab->dtpmod_refcount == 0)
2628 htab->next_gotplt_entry -= 8;
2629 BFD_ASSERT (local_got_refcounts != NULL);
2630 local_got_refcounts[-1]--;
2631 break;
2632
2633 default:
2634 break;
2635 }
2636 }
2637
2638 return TRUE;
2639 }
2640
2641 /* The elf_backend_plt_sym_val hook function. */
2642
2643 static bfd_vma
2644 cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt,
2645 const arelent *rel)
2646 {
2647 bfd_size_type plt_entry_size;
2648 bfd_size_type pltoffs;
2649 bfd *abfd = plt->owner;
2650
2651 /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */
2652 bfd_size_type plt_entry_got_offset = 2;
2653 bfd_size_type plt_sec_size;
2654 bfd_size_type got_vma_for_dyn;
2655 asection *got;
2656
2657 /* FIXME: the .got section should be readily available also when
2658 we're not linking. */
2659 if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL)
2660 return (bfd_vma) -1;
2661
2662 plt_sec_size = bfd_section_size (plt->owner, plt);
2663 plt_entry_size
2664 = (bfd_get_mach (abfd) == bfd_mach_cris_v32
2665 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2666
2667 /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */
2668 got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma;
2669
2670 /* Because we can have merged GOT entries; a single .got entry for
2671 both GOT and the PLT part of the GOT (.got.plt), the index of the
2672 reloc in .rela.plt is not the same as the index in the PLT.
2673 Instead, we have to hunt down the GOT offset in the PLT that
2674 corresponds to that of this reloc. Unfortunately, we will only
2675 be called for the .rela.plt relocs, so we'll miss synthetic
2676 symbols for .plt entries with merged GOT entries. (FIXME:
2677 fixable by providing our own bfd_elf32_get_synthetic_symtab.
2678 Doesn't seem worthwile at time of this writing.) FIXME: we've
2679 gone from O(1) to O(N) (N number of PLT entries) for finding each
2680 PLT address. Shouldn't matter in practice though. */
2681
2682 for (pltoffs = plt_entry_size;
2683 pltoffs < plt_sec_size;
2684 pltoffs += plt_entry_size)
2685 {
2686 bfd_size_type got_offset;
2687 bfd_byte gotoffs_raw[4];
2688
2689 if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw,
2690 pltoffs + plt_entry_got_offset,
2691 sizeof (gotoffs_raw)))
2692 return (bfd_vma) -1;
2693
2694 got_offset = bfd_get_32 (abfd, gotoffs_raw);
2695 if (got_offset + got_vma_for_dyn == rel->address)
2696 return plt->vma + pltoffs;
2697 }
2698
2699 /* While it's tempting to BFD_ASSERT that we shouldn't get here,
2700 that'd not be graceful behavior for invalid input. */
2701 return (bfd_vma) -1;
2702 }
2703
2704 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2705 entry but we found we will not create any. Called when we find we will
2706 not have any PLT for this symbol, by for example
2707 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2708 or elf_cris_size_dynamic_sections if no dynamic sections will be
2709 created (we're only linking static objects). */
2710
2711 static bfd_boolean
2712 elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2713 {
2714 struct bfd_link_info *info = (struct bfd_link_info *) p;
2715
2716 /* A GOTPLT reloc, when activated, is supposed to be included into
2717 the PLT refcount, when the symbol isn't set-or-forced local. */
2718 BFD_ASSERT (h->gotplt_refcount == 0
2719 || h->root.plt.refcount == -1
2720 || h->gotplt_refcount <= h->root.plt.refcount);
2721
2722 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2723 if (h->gotplt_refcount <= 0)
2724 return TRUE;
2725
2726 if (h->reg_got_refcount > 0)
2727 {
2728 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2729 Probably not necessary at this stage, but keeping them accurate
2730 helps avoiding surprises later. */
2731 h->root.got.refcount += h->gotplt_refcount;
2732 h->reg_got_refcount += h->gotplt_refcount;
2733 h->gotplt_refcount = 0;
2734 }
2735 else
2736 {
2737 /* No GOT entry for this symbol. We need to create one. */
2738 asection *sgot;
2739 asection *srelgot;
2740
2741 sgot = elf_hash_table (info)->sgot;
2742 srelgot = elf_hash_table (info)->srelgot;
2743
2744 /* Put accurate refcounts there. */
2745 BFD_ASSERT (h->root.got.refcount >= 0);
2746 h->root.got.refcount += h->gotplt_refcount;
2747 h->reg_got_refcount = h->gotplt_refcount;
2748
2749 h->gotplt_refcount = 0;
2750
2751 /* We always have a .got and a .rela.got section if there were
2752 GOTPLT relocs in input. */
2753 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2754
2755 /* Allocate space in the .got section. */
2756 sgot->size += 4;
2757
2758 /* Allocate relocation space. */
2759 srelgot->size += sizeof (Elf32_External_Rela);
2760 }
2761
2762 return TRUE;
2763 }
2764
2765 /* Try to fold PLT entries with GOT entries. There are two cases when we
2766 want to do this:
2767
2768 - When all PLT references are GOTPLT references, and there are GOT
2769 references, and this is not the executable. We don't have to
2770 generate a PLT at all.
2771
2772 - When there are both (ordinary) PLT references and GOT references,
2773 and this isn't the executable.
2774 We want to make the PLT reference use the ordinary GOT entry rather
2775 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2776 since the GOT entry will have to be resolved at startup anyway.
2777
2778 Though the latter case is handled when room for the PLT is allocated,
2779 not here.
2780
2781 By folding into the GOT, we may need a round-trip to a PLT in the
2782 executable for calls, a loss in performance. Still, losing a
2783 reloc is a win in size and at least in start-up time.
2784
2785 Note that this function is called before symbols are forced local by
2786 version scripts. The differing cases are handled by
2787 elf_cris_hide_symbol. */
2788
2789 static bfd_boolean
2790 elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2791 {
2792 struct bfd_link_info *info = (struct bfd_link_info *) p;
2793
2794 /* If there are no GOT references for this symbol, we can't fold any
2795 other reference so there's nothing to do. Likewise if there are no
2796 PLT references; GOTPLT references included. */
2797 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2798 return TRUE;
2799
2800 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2801 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2802
2803 if (h->gotplt_refcount == h->root.plt.refcount)
2804 {
2805 /* The only PLT references are GOTPLT references, and there are GOT
2806 references. Convert PLT to GOT references. */
2807 if (! elf_cris_adjust_gotplt_to_got (h, info))
2808 return FALSE;
2809
2810 /* Clear the PLT references, so no PLT will be created. */
2811 h->root.plt.offset = (bfd_vma) -1;
2812 }
2813
2814 return TRUE;
2815 }
2816
2817 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2818 to use a GOT entry (and create one) rather than requiring a GOTPLT
2819 entry. */
2820
2821 static void
2822 elf_cris_hide_symbol (struct bfd_link_info *info,
2823 struct elf_link_hash_entry *h,
2824 bfd_boolean force_local)
2825 {
2826 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2827
2828 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2829 }
2830
2831 /* Adjust a symbol defined by a dynamic object and referenced by a
2832 regular object. The current definition is in some section of the
2833 dynamic object, but we're not including those sections. We have to
2834 change the definition to something the rest of the link can
2835 understand. */
2836
2837 static bfd_boolean
2838 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2839 struct elf_link_hash_entry *h)
2840 {
2841 struct elf_cris_link_hash_table * htab;
2842 bfd *dynobj;
2843 asection *s;
2844 asection *srel;
2845 bfd_size_type plt_entry_size;
2846
2847 htab = elf_cris_hash_table (info);
2848 if (htab == NULL)
2849 return FALSE;
2850
2851 dynobj = htab->root.dynobj;
2852
2853 /* Make sure we know what is going on here. */
2854 BFD_ASSERT (dynobj != NULL
2855 && (h->needs_plt
2856 || h->u.weakdef != NULL
2857 || (h->def_dynamic
2858 && h->ref_regular
2859 && !h->def_regular)));
2860
2861 plt_entry_size
2862 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2863 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2864
2865 /* If this is a function, put it in the procedure linkage table. We
2866 will fill in the contents of the procedure linkage table later,
2867 when we know the address of the .got section. */
2868 if (h->type == STT_FUNC
2869 || h->needs_plt)
2870 {
2871 /* If we link a program (not a DSO), we'll get rid of unnecessary
2872 PLT entries; we point to the actual symbols -- even for pic
2873 relocs, because a program built with -fpic should have the same
2874 result as one built without -fpic, specifically considering weak
2875 symbols.
2876 FIXME: m68k and i386 differ here, for unclear reasons. */
2877 if (! bfd_link_pic (info)
2878 && !h->def_dynamic)
2879 {
2880 /* This case can occur if we saw a PLT reloc in an input file,
2881 but the symbol was not defined by a dynamic object. In such
2882 a case, we don't actually need to build a procedure linkage
2883 table, and we can just do an absolute or PC reloc instead, or
2884 change a .got.plt index to a .got index for GOTPLT relocs. */
2885 BFD_ASSERT (h->needs_plt);
2886 h->needs_plt = 0;
2887 h->plt.offset = (bfd_vma) -1;
2888 return
2889 elf_cris_adjust_gotplt_to_got ((struct
2890 elf_cris_link_hash_entry *) h,
2891 info);
2892 }
2893
2894 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2895 where a pointer-equivalent symbol was unimportant (i.e. more
2896 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2897 of the PLT. We can't for the executable, because the GOT
2898 entries will point to the PLT there (and be constant). */
2899 if (bfd_link_pic (info)
2900 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2901 h, info))
2902 return FALSE;
2903
2904 /* GC or folding may have rendered this entry unused. */
2905 if (h->plt.refcount <= 0)
2906 {
2907 h->needs_plt = 0;
2908 h->plt.offset = (bfd_vma) -1;
2909 return TRUE;
2910 }
2911
2912 /* Make sure this symbol is output as a dynamic symbol. */
2913 if (h->dynindx == -1)
2914 {
2915 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2916 return FALSE;
2917 }
2918
2919 s = htab->root.splt;
2920 BFD_ASSERT (s != NULL);
2921
2922 /* If this is the first .plt entry, make room for the special
2923 first entry. */
2924 if (s->size == 0)
2925 s->size += plt_entry_size;
2926
2927 /* If this symbol is not defined in a regular file, and we are
2928 not generating a shared library, then set the symbol to this
2929 location in the .plt. */
2930 if (!bfd_link_pic (info)
2931 && !h->def_regular)
2932 {
2933 h->root.u.def.section = s;
2934 h->root.u.def.value = s->size;
2935 }
2936
2937 /* If there's already a GOT entry, use that, not a .got.plt. A
2938 GOT field still has a reference count when we get here; it's
2939 not yet changed to an offset. We can't do this for an
2940 executable, because then the reloc associated with the PLT
2941 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2942 this to elf_cris_try_fold_plt_to_got. */
2943 if (bfd_link_pic (info) && h->got.refcount > 0)
2944 {
2945 h->got.refcount += h->plt.refcount;
2946
2947 /* Mark the PLT offset to use the GOT entry by setting the low
2948 bit in the plt offset; it is always a multiple of
2949 plt_entry_size (which is at least a multiple of 2). */
2950 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2951
2952 /* Change the PLT refcount to an offset. */
2953 h->plt.offset = s->size;
2954
2955 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2956 that the got entry should be used instead. */
2957 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2958 h)->gotplt_offset == 0);
2959
2960 /* Make room for this entry. */
2961 s->size += plt_entry_size;
2962
2963 return TRUE;
2964 }
2965
2966 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2967 h->plt.offset = s->size;
2968
2969 /* Make room for this entry. */
2970 s->size += plt_entry_size;
2971
2972 /* We also need to make an entry in the .got.plt section, which
2973 will be placed in the .got section by the linker script. */
2974 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2975 = htab->next_gotplt_entry;
2976 htab->next_gotplt_entry += 4;
2977
2978 s = htab->root.sgotplt;
2979 BFD_ASSERT (s != NULL);
2980 s->size += 4;
2981
2982 /* We also need to make an entry in the .rela.plt section. */
2983
2984 s = htab->root.srelplt;
2985 BFD_ASSERT (s != NULL);
2986 s->size += sizeof (Elf32_External_Rela);
2987
2988 return TRUE;
2989 }
2990
2991 /* Reinitialize the plt offset now that it is not used as a reference
2992 count any more. */
2993 h->plt.offset = (bfd_vma) -1;
2994
2995 /* If this is a weak symbol, and there is a real definition, the
2996 processor independent code will have arranged for us to see the
2997 real definition first, and we can just use the same value. */
2998 if (h->u.weakdef != NULL)
2999 {
3000 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3001 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3002 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3003 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3004 return TRUE;
3005 }
3006
3007 /* This is a reference to a symbol defined by a dynamic object which
3008 is not a function. */
3009
3010 /* If we are creating a shared library, we must presume that the
3011 only references to the symbol are via the global offset table.
3012 For such cases we need not do anything here; the relocations will
3013 be handled correctly by relocate_section. */
3014 if (bfd_link_pic (info))
3015 return TRUE;
3016
3017 /* If there are no references to this symbol that do not use the
3018 GOT, we don't need to generate a copy reloc. */
3019 if (!h->non_got_ref)
3020 return TRUE;
3021
3022 /* We must allocate the symbol in our .dynbss section, which will
3023 become part of the .bss section of the executable. There will be
3024 an entry for this symbol in the .dynsym section. The dynamic
3025 object will contain position independent code, so all references
3026 from the dynamic object to this symbol will go through the global
3027 offset table. The dynamic linker will use the .dynsym entry to
3028 determine the address it must put in the global offset table, so
3029 both the dynamic object and the regular object will refer to the
3030 same memory location for the variable. */
3031
3032 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3033 copy the initial value out of the dynamic object and into the
3034 runtime process image. We need to remember the offset into the
3035 .rela.bss section we are going to use. */
3036
3037 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
3038 {
3039 s = htab->root.sdynrelro;
3040 srel = htab->root.sreldynrelro;
3041 }
3042 else
3043 {
3044 s = htab->root.sdynbss;
3045 srel = htab->root.srelbss;
3046 }
3047 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3048 {
3049 BFD_ASSERT (srel != NULL);
3050 srel->size += sizeof (Elf32_External_Rela);
3051 h->needs_copy = 1;
3052 }
3053
3054 BFD_ASSERT (s != NULL);
3055
3056 return _bfd_elf_adjust_dynamic_copy (info, h, s);
3057 }
3058
3059 /* Adjust our "subclass" elements for an indirect symbol. */
3060
3061 static void
3062 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3063 struct elf_link_hash_entry *dir,
3064 struct elf_link_hash_entry *ind)
3065 {
3066 struct elf_cris_link_hash_entry *edir, *eind;
3067
3068 edir = (struct elf_cris_link_hash_entry *) dir;
3069 eind = (struct elf_cris_link_hash_entry *) ind;
3070
3071 /* Only indirect symbols are replaced; we're not interested in
3072 updating any of EIND's fields for other symbols. */
3073 if (eind->root.root.type != bfd_link_hash_indirect)
3074 {
3075 /* Still, we need to copy flags for e.g. weak definitions. */
3076 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3077 return;
3078 }
3079
3080 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3081
3082 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3083 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3084 if (eind->pcrel_relocs_copied != NULL)
3085 {
3086 if (edir->pcrel_relocs_copied != NULL)
3087 {
3088 struct elf_cris_pcrel_relocs_copied **pp;
3089 struct elf_cris_pcrel_relocs_copied *p;
3090
3091 /* Add reloc counts against the indirect sym to the direct sym
3092 list. Merge any entries against the same section. */
3093 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3094 {
3095 struct elf_cris_pcrel_relocs_copied *q;
3096 p = *pp;
3097 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3098 if (q->section == p->section)
3099 {
3100 q->count += p->count;
3101 *pp = p->next;
3102 break;
3103 }
3104 if (q == NULL)
3105 pp = &p->next;
3106 }
3107 *pp = edir->pcrel_relocs_copied;
3108 }
3109 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3110 }
3111 XMOVE (gotplt_refcount);
3112 XMOVE (gotplt_offset);
3113 XMOVE (reg_got_refcount);
3114 XMOVE (tprel_refcount);
3115 XMOVE (dtp_refcount);
3116 #undef XMOVE
3117 #undef XMOVOPZ
3118
3119 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3120 }
3121
3122 /* Look through the relocs for a section during the first phase. */
3123
3124 static bfd_boolean
3125 cris_elf_check_relocs (bfd *abfd,
3126 struct bfd_link_info *info,
3127 asection *sec,
3128 const Elf_Internal_Rela *relocs)
3129 {
3130 struct elf_cris_link_hash_table * htab;
3131 bfd *dynobj;
3132 Elf_Internal_Shdr *symtab_hdr;
3133 struct elf_link_hash_entry **sym_hashes;
3134 bfd_signed_vma *local_got_refcounts;
3135 const Elf_Internal_Rela *rel;
3136 const Elf_Internal_Rela *rel_end;
3137 asection *sgot;
3138 asection *srelgot;
3139 asection *sreloc;
3140
3141 if (bfd_link_relocatable (info))
3142 return TRUE;
3143
3144 htab = elf_cris_hash_table (info);
3145 if (htab == NULL)
3146 return FALSE;
3147
3148 dynobj = elf_hash_table (info)->dynobj;
3149 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3150 sym_hashes = elf_sym_hashes (abfd);
3151 local_got_refcounts = elf_local_got_refcounts (abfd);
3152
3153 sgot = NULL;
3154 srelgot = NULL;
3155 sreloc = NULL;
3156
3157 rel_end = relocs + sec->reloc_count;
3158 for (rel = relocs; rel < rel_end; rel++)
3159 {
3160 struct elf_link_hash_entry *h;
3161 unsigned long r_symndx;
3162 enum elf_cris_reloc_type r_type;
3163 bfd_signed_vma got_element_size = 4;
3164 unsigned long r_symndx_lgot = INT_MAX;
3165
3166 r_symndx = ELF32_R_SYM (rel->r_info);
3167 if (r_symndx < symtab_hdr->sh_info)
3168 {
3169 h = NULL;
3170 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3171 }
3172 else
3173 {
3174 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3175 while (h->root.type == bfd_link_hash_indirect
3176 || h->root.type == bfd_link_hash_warning)
3177 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3178
3179 /* PR15323, ref flags aren't set for references in the same
3180 object. */
3181 h->root.non_ir_ref = 1;
3182 }
3183
3184 r_type = ELF32_R_TYPE (rel->r_info);
3185
3186 /* Some relocs require linker-created sections; we need to hang them
3187 on the first input bfd we found that contained dynamic relocs. */
3188 switch (r_type)
3189 {
3190 case R_CRIS_32_DTPREL:
3191 if ((sec->flags & SEC_ALLOC) == 0)
3192 /* This'd be a .dtpreld entry in e.g. debug info. We have
3193 several different switch statements below, but none of
3194 that is needed; we need no preparations for resolving
3195 R_CRIS_32_DTPREL into a non-allocated section (debug
3196 info), so let's just move on to the next
3197 relocation. */
3198 continue;
3199 /* Fall through. */
3200 case R_CRIS_16_DTPREL:
3201 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3202 entry at index 3. */
3203 if (htab->dtpmod_refcount == 0)
3204 htab->next_gotplt_entry += 8;
3205
3206 htab->dtpmod_refcount++;
3207 /* Fall through. */
3208
3209 case R_CRIS_32_IE:
3210 case R_CRIS_32_GD:
3211 case R_CRIS_16_GOT_GD:
3212 case R_CRIS_32_GOT_GD:
3213 case R_CRIS_32_GOT_TPREL:
3214 case R_CRIS_16_GOT_TPREL:
3215 case R_CRIS_16_GOT:
3216 case R_CRIS_32_GOT:
3217 case R_CRIS_32_GOTREL:
3218 case R_CRIS_32_PLT_GOTREL:
3219 case R_CRIS_32_PLT_PCREL:
3220 case R_CRIS_16_GOTPLT:
3221 case R_CRIS_32_GOTPLT:
3222 if (dynobj == NULL)
3223 {
3224 elf_hash_table (info)->dynobj = dynobj = abfd;
3225
3226 /* We could handle this if we can get a handle on the
3227 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3228 that, we must insist on dynobj being a specific mach. */
3229 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3230 {
3231 _bfd_error_handler
3232 /* xgettext:c-format */
3233 (_("%B, section %A:\n v10/v32 compatible object %s"
3234 " must not contain a PIC relocation"),
3235 abfd, sec);
3236 return FALSE;
3237 }
3238 }
3239
3240 if (sgot == NULL)
3241 {
3242 /* We may have a dynobj but no .got section, if machine-
3243 independent parts of the linker found a reason to create
3244 a dynobj. We want to create the .got section now, so we
3245 can assume it's always present whenever there's a dynobj.
3246 It's ok to call this function more than once. */
3247 if (!_bfd_elf_create_got_section (dynobj, info))
3248 return FALSE;
3249
3250 sgot = elf_hash_table (info)->sgot;
3251 srelgot = elf_hash_table (info)->srelgot;
3252 }
3253
3254 if (local_got_refcounts == NULL)
3255 {
3256 bfd_size_type amt;
3257
3258 /* We use index local_got_refcounts[-1] to count all
3259 GOT-relative relocations that do not have explicit
3260 GOT entries. */
3261 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3262 amt *= sizeof (bfd_signed_vma);
3263 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3264 if (local_got_refcounts == NULL)
3265 return FALSE;
3266
3267 local_got_refcounts++;
3268 elf_local_got_refcounts (abfd) = local_got_refcounts;
3269 }
3270 break;
3271
3272 default:
3273 break;
3274 }
3275
3276 /* Warn and error for invalid input. */
3277 switch (r_type)
3278 {
3279 case R_CRIS_32_IE:
3280 case R_CRIS_32_TPREL:
3281 case R_CRIS_16_TPREL:
3282 case R_CRIS_32_GD:
3283 if (bfd_link_pic (info))
3284 {
3285 _bfd_error_handler
3286 /* xgettext:c-format */
3287 (_("%B, section %A:\n relocation %s not valid"
3288 " in a shared object;"
3289 " typically an option mixup, recompile with -fPIC"),
3290 abfd,
3291 sec,
3292 cris_elf_howto_table[r_type].name);
3293 /* Don't return FALSE here; we want messages for all of
3294 these and the error behavior is ungraceful
3295 anyway. */
3296 }
3297 default:
3298 break;
3299 }
3300
3301 switch (r_type)
3302 {
3303 case R_CRIS_32_GD:
3304 case R_CRIS_16_GOT_GD:
3305 case R_CRIS_32_GOT_GD:
3306 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3307 got_element_size = 8;
3308 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3309 break;
3310
3311 case R_CRIS_16_DTPREL:
3312 case R_CRIS_32_DTPREL:
3313 /* These two just request for the constant-index
3314 module-local tls_index-sized GOT entry, which we add
3315 elsewhere. */
3316 break;
3317
3318 case R_CRIS_32_IE:
3319 case R_CRIS_32_GOT_TPREL:
3320 case R_CRIS_16_GOT_TPREL:
3321 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3322
3323 /* Those relocs also require that a DSO is of type
3324 Initial Exec. Like other targets, we don't reset this
3325 flag even if the relocs are GC:ed away. */
3326 if (bfd_link_pic (info))
3327 info->flags |= DF_STATIC_TLS;
3328 break;
3329
3330 /* Let's list the other assembler-generated TLS-relocs too,
3331 just to show that they're not forgotten. */
3332 case R_CRIS_16_TPREL:
3333 case R_CRIS_32_TPREL:
3334 default:
3335 break;
3336 }
3337
3338 switch (r_type)
3339 {
3340 case R_CRIS_16_GOTPLT:
3341 case R_CRIS_32_GOTPLT:
3342 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3343 entry) is eliminated. We can only do this for a non-local
3344 symbol. */
3345 if (h != NULL)
3346 {
3347 elf_cris_hash_entry (h)->gotplt_refcount++;
3348 goto handle_gotplt_reloc;
3349 }
3350 /* If h is NULL then this is a local symbol, and we must make a
3351 GOT entry for it, so handle it like a GOT reloc. */
3352 /* Fall through. */
3353
3354 case R_CRIS_32_IE:
3355 case R_CRIS_32_GD:
3356 case R_CRIS_16_GOT_GD:
3357 case R_CRIS_32_GOT_GD:
3358 case R_CRIS_32_GOT_TPREL:
3359 case R_CRIS_16_GOT_TPREL:
3360 case R_CRIS_16_GOT:
3361 case R_CRIS_32_GOT:
3362 /* This symbol requires a global offset table entry. */
3363 if (h != NULL)
3364 {
3365 if (h->got.refcount == 0)
3366 {
3367 /* Make sure this symbol is output as a dynamic symbol. */
3368 if (h->dynindx == -1)
3369 {
3370 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3371 return FALSE;
3372 }
3373 }
3374
3375 /* Update the sum of reloc counts for this symbol. */
3376 h->got.refcount++;
3377
3378 switch (r_type)
3379 {
3380 case R_CRIS_16_GOT:
3381 case R_CRIS_32_GOT:
3382 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3383 {
3384 /* Allocate space in the .got section. */
3385 sgot->size += got_element_size;
3386 /* Allocate relocation space. */
3387 srelgot->size += sizeof (Elf32_External_Rela);
3388 }
3389 elf_cris_hash_entry (h)->reg_got_refcount++;
3390 break;
3391
3392 case R_CRIS_32_GD:
3393 case R_CRIS_16_GOT_GD:
3394 case R_CRIS_32_GOT_GD:
3395 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3396 {
3397 /* Allocate space in the .got section. */
3398 sgot->size += got_element_size;
3399 /* Allocate relocation space. */
3400 srelgot->size += sizeof (Elf32_External_Rela);
3401 }
3402 elf_cris_hash_entry (h)->dtp_refcount++;
3403 break;
3404
3405 case R_CRIS_32_IE:
3406 case R_CRIS_32_GOT_TPREL:
3407 case R_CRIS_16_GOT_TPREL:
3408 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3409 {
3410 /* Allocate space in the .got section. */
3411 sgot->size += got_element_size;
3412 /* Allocate relocation space. */
3413 srelgot->size += sizeof (Elf32_External_Rela);
3414 }
3415 elf_cris_hash_entry (h)->tprel_refcount++;
3416 break;
3417
3418 default:
3419 BFD_FAIL ();
3420 break;
3421 }
3422 }
3423 else
3424 {
3425 /* This is a global offset table entry for a local symbol. */
3426 if (local_got_refcounts[r_symndx_lgot] == 0)
3427 {
3428 sgot->size += got_element_size;
3429 if (bfd_link_pic (info))
3430 {
3431 /* If we are generating a shared object, we need
3432 to output a R_CRIS_RELATIVE reloc so that the
3433 dynamic linker can adjust this GOT entry.
3434 Similarly for non-regular got entries. */
3435 srelgot->size += sizeof (Elf32_External_Rela);
3436 }
3437 }
3438 /* Update the reloc-specific count. */
3439 local_got_refcounts[r_symndx_lgot]++;
3440
3441 /* This one is the sum of all the others. */
3442 local_got_refcounts[r_symndx]++;
3443 }
3444 break;
3445
3446 case R_CRIS_16_DTPREL:
3447 case R_CRIS_32_DTPREL:
3448 case R_CRIS_32_GOTREL:
3449 /* This reference requires a global offset table.
3450 FIXME: The actual refcount isn't used currently; the .got
3451 section can't be removed if there were any references in the
3452 input. */
3453 local_got_refcounts[-1]++;
3454 break;
3455
3456 handle_gotplt_reloc:
3457
3458 case R_CRIS_32_PLT_GOTREL:
3459 /* This reference requires a global offset table. */
3460 local_got_refcounts[-1]++;
3461 /* Fall through. */
3462
3463 case R_CRIS_32_PLT_PCREL:
3464 /* This symbol requires a procedure linkage table entry. We
3465 actually build the entry in adjust_dynamic_symbol,
3466 because this might be a case of linking PIC code which is
3467 never referenced by a dynamic object, in which case we
3468 don't need to generate a procedure linkage table entry
3469 after all. */
3470
3471 /* Beware: if we'd check for visibility of the symbol here
3472 (and not marking the need for a PLT when non-visible), we'd
3473 get into trouble with keeping handling consistent with
3474 regards to relocs found before definition and GOTPLT
3475 handling. Eliminable PLT entries will be dealt with later
3476 anyway. */
3477 if (h == NULL)
3478 continue;
3479
3480 h->needs_plt = 1;
3481
3482 /* If the symbol is forced local, the refcount is unavailable. */
3483 if (h->plt.refcount != -1)
3484 h->plt.refcount++;
3485 break;
3486
3487 case R_CRIS_8:
3488 case R_CRIS_16:
3489 case R_CRIS_32:
3490 /* Let's help debug shared library creation. Any of these
3491 relocs *can* be used in shared libs, but pages containing
3492 them cannot be shared, so they're not appropriate for
3493 common use. Don't warn for sections we don't care about,
3494 such as debug sections or non-constant sections. We
3495 can't help tables of (global) function pointers, for
3496 example, though they must be emitted in a (writable) data
3497 section to avoid having impure text sections. */
3498 if (bfd_link_pic (info)
3499 && (sec->flags & SEC_ALLOC) != 0
3500 && (sec->flags & SEC_READONLY) != 0)
3501 {
3502 /* FIXME: How do we make this optionally a warning only? */
3503 _bfd_error_handler
3504 /* xgettext:c-format */
3505 (_("%B, section %A:\n relocation %s should not"
3506 " be used in a shared object; recompile with -fPIC"),
3507 abfd,
3508 sec,
3509 cris_elf_howto_table[r_type].name);
3510 }
3511
3512 /* We don't need to handle relocs into sections not going into
3513 the "real" output. */
3514 if ((sec->flags & SEC_ALLOC) == 0)
3515 break;
3516
3517 if (h != NULL)
3518 {
3519 h->non_got_ref = 1;
3520
3521 /* Make sure a plt entry is created for this symbol if it
3522 turns out to be a function defined by a dynamic object. */
3523 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3524 h->plt.refcount++;
3525 }
3526
3527 /* If we are creating a shared library and this is not a local
3528 symbol, we need to copy the reloc into the shared library.
3529 However when linking with -Bsymbolic and this is a global
3530 symbol which is defined in an object we are including in the
3531 link (i.e., DEF_REGULAR is set), then we can resolve the
3532 reloc directly. At this point we have not seen all the input
3533 files, so it is possible that DEF_REGULAR is not set now but
3534 will be set later (it is never cleared). In case of a weak
3535 definition, DEF_REGULAR may be cleared later by a strong
3536 definition in a shared library. We account for that
3537 possibility below by storing information in the relocs_copied
3538 field of the hash table entry. A similar situation occurs
3539 when creating shared libraries and symbol visibility changes
3540 render the symbol local. */
3541
3542 /* No need to do anything if we're not creating a shared object. */
3543 if (! bfd_link_pic (info))
3544 break;
3545
3546 /* We may need to create a reloc section in the dynobj and made room
3547 for this reloc. */
3548 if (sreloc == NULL)
3549 {
3550 sreloc = _bfd_elf_make_dynamic_reloc_section
3551 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3552
3553 if (sreloc == NULL)
3554 return FALSE;
3555 }
3556
3557 if (sec->flags & SEC_READONLY)
3558 info->flags |= DF_TEXTREL;
3559
3560 sreloc->size += sizeof (Elf32_External_Rela);
3561 break;
3562
3563 case R_CRIS_8_PCREL:
3564 case R_CRIS_16_PCREL:
3565 case R_CRIS_32_PCREL:
3566 if (h != NULL)
3567 {
3568 h->non_got_ref = 1;
3569
3570 /* Make sure a plt entry is created for this symbol if it
3571 turns out to be a function defined by a dynamic object. */
3572 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3573 h->plt.refcount++;
3574 }
3575
3576 /* If we are creating a shared library and this is not a local
3577 symbol, we need to copy the reloc into the shared library.
3578 However when linking with -Bsymbolic and this is a global
3579 symbol which is defined in an object we are including in the
3580 link (i.e., DEF_REGULAR is set), then we can resolve the
3581 reloc directly. At this point we have not seen all the input
3582 files, so it is possible that DEF_REGULAR is not set now but
3583 will be set later (it is never cleared). In case of a weak
3584 definition, DEF_REGULAR may be cleared later by a strong
3585 definition in a shared library. We account for that
3586 possibility below by storing information in the relocs_copied
3587 field of the hash table entry. A similar situation occurs
3588 when creating shared libraries and symbol visibility changes
3589 render the symbol local. */
3590
3591 /* No need to do anything if we're not creating a shared object. */
3592 if (! bfd_link_pic (info))
3593 break;
3594
3595 /* We don't need to handle relocs into sections not going into
3596 the "real" output. */
3597 if ((sec->flags & SEC_ALLOC) == 0)
3598 break;
3599
3600 /* If the symbol is local, then we know already we can
3601 eliminate the reloc. */
3602 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3603 break;
3604
3605 /* If this is with -Bsymbolic and the symbol isn't weak, and
3606 is defined by an ordinary object (the ones we include in
3607 this shared library) then we can also eliminate the
3608 reloc. See comment above for more eliminable cases which
3609 we can't identify at this time. */
3610 if (SYMBOLIC_BIND (info, h)
3611 && h->root.type != bfd_link_hash_defweak
3612 && h->def_regular)
3613 break;
3614
3615 /* We may need to create a reloc section in the dynobj and made room
3616 for this reloc. */
3617 if (sreloc == NULL)
3618 {
3619 sreloc = _bfd_elf_make_dynamic_reloc_section
3620 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3621
3622 if (sreloc == NULL)
3623 return FALSE;
3624 }
3625
3626 sreloc->size += sizeof (Elf32_External_Rela);
3627
3628 /* We count the number of PC relative relocations we have
3629 entered for this symbol, so that we can discard them
3630 again if the symbol is later defined by a regular object.
3631 We know that h is really a pointer to an
3632 elf_cris_link_hash_entry. */
3633 {
3634 struct elf_cris_link_hash_entry *eh;
3635 struct elf_cris_pcrel_relocs_copied *p;
3636
3637 eh = elf_cris_hash_entry (h);
3638
3639 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3640 if (p->section == sec)
3641 break;
3642
3643 if (p == NULL)
3644 {
3645 p = ((struct elf_cris_pcrel_relocs_copied *)
3646 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3647 if (p == NULL)
3648 return FALSE;
3649 p->next = eh->pcrel_relocs_copied;
3650 eh->pcrel_relocs_copied = p;
3651 p->section = sec;
3652 p->count = 0;
3653 p->r_type = r_type;
3654 }
3655
3656 ++p->count;
3657 }
3658 break;
3659
3660 /* This relocation describes the C++ object vtable hierarchy.
3661 Reconstruct it for later use during GC. */
3662 case R_CRIS_GNU_VTINHERIT:
3663 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3664 return FALSE;
3665 break;
3666
3667 /* This relocation describes which C++ vtable entries are actually
3668 used. Record for later use during GC. */
3669 case R_CRIS_GNU_VTENTRY:
3670 BFD_ASSERT (h != NULL);
3671 if (h != NULL
3672 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3673 return FALSE;
3674 break;
3675
3676 case R_CRIS_16_TPREL:
3677 case R_CRIS_32_TPREL:
3678 /* Already warned above, when necessary. */
3679 break;
3680
3681 default:
3682 /* Other relocs do not appear here. */
3683 bfd_set_error (bfd_error_bad_value);
3684 return FALSE;
3685 }
3686 }
3687
3688 return TRUE;
3689 }
3690
3691 /* Set the sizes of the dynamic sections. */
3692
3693 static bfd_boolean
3694 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3695 struct bfd_link_info *info)
3696 {
3697 struct elf_cris_link_hash_table * htab;
3698 bfd *dynobj;
3699 asection *s;
3700 bfd_boolean plt;
3701 bfd_boolean relocs;
3702
3703 htab = elf_cris_hash_table (info);
3704 if (htab == NULL)
3705 return FALSE;
3706
3707 dynobj = htab->root.dynobj;
3708 BFD_ASSERT (dynobj != NULL);
3709
3710 if (htab->root.dynamic_sections_created)
3711 {
3712 /* Set the contents of the .interp section to the interpreter. */
3713 if (bfd_link_executable (info) && !info->nointerp)
3714 {
3715 s = bfd_get_linker_section (dynobj, ".interp");
3716 BFD_ASSERT (s != NULL);
3717 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3718 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3719 }
3720 }
3721 else
3722 {
3723 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3724 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3725 info);
3726
3727 /* We may have created entries in the .rela.got section.
3728 However, if we are not creating the dynamic sections, we will
3729 not actually use these entries. Reset the size of .rela.got,
3730 which will cause it to get stripped from the output file
3731 below. */
3732 s = htab->root.srelgot;
3733 if (s != NULL)
3734 s->size = 0;
3735 }
3736
3737 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3738 relative relocs against symbols defined in a regular object. We
3739 allocated space for them in the check_relocs routine, but we will not
3740 fill them in in the relocate_section routine. We also discard space
3741 for relocs that have become for local symbols due to symbol
3742 visibility changes. For programs, we discard space for relocs for
3743 symbols not referenced by any dynamic object. */
3744 if (bfd_link_pic (info))
3745 elf_cris_link_hash_traverse (htab,
3746 elf_cris_discard_excess_dso_dynamics,
3747 info);
3748 else
3749 elf_cris_link_hash_traverse (htab,
3750 elf_cris_discard_excess_program_dynamics,
3751 info);
3752
3753 /* The check_relocs and adjust_dynamic_symbol entry points have
3754 determined the sizes of the various dynamic sections. Allocate
3755 memory for them. */
3756 plt = FALSE;
3757 relocs = FALSE;
3758 for (s = dynobj->sections; s != NULL; s = s->next)
3759 {
3760 const char *name;
3761
3762 if ((s->flags & SEC_LINKER_CREATED) == 0)
3763 continue;
3764
3765 /* It's OK to base decisions on the section name, because none
3766 of the dynobj section names depend upon the input files. */
3767 name = bfd_get_section_name (dynobj, s);
3768
3769 if (strcmp (name, ".plt") == 0)
3770 {
3771 /* Remember whether there is a PLT. */
3772 plt = s->size != 0;
3773 }
3774 else if (strcmp (name, ".got.plt") == 0)
3775 {
3776 /* The .got.plt contains the .got header as well as the
3777 actual .got.plt contents. The .got header may contain a
3778 R_CRIS_DTPMOD entry at index 3. */
3779 s->size += htab->dtpmod_refcount != 0
3780 ? 8 : 0;
3781 }
3782 else if (CONST_STRNEQ (name, ".rela"))
3783 {
3784 if (strcmp (name, ".rela.got") == 0
3785 && htab->dtpmod_refcount != 0
3786 && bfd_link_pic (info))
3787 s->size += sizeof (Elf32_External_Rela);
3788
3789 if (s->size != 0)
3790 {
3791 /* Remember whether there are any reloc sections other
3792 than .rela.plt. */
3793 if (strcmp (name, ".rela.plt") != 0)
3794 relocs = TRUE;
3795
3796 /* We use the reloc_count field as a counter if we need
3797 to copy relocs into the output file. */
3798 s->reloc_count = 0;
3799 }
3800 }
3801 else if (! CONST_STRNEQ (name, ".got")
3802 && strcmp (name, ".dynbss") != 0
3803 && s != htab->root.sdynrelro)
3804 {
3805 /* It's not one of our sections, so don't allocate space. */
3806 continue;
3807 }
3808
3809 if (s->size == 0)
3810 {
3811 /* If we don't need this section, strip it from the
3812 output file. This is mostly to handle .rela.bss and
3813 .rela.plt. We must create both sections in
3814 create_dynamic_sections, because they must be created
3815 before the linker maps input sections to output
3816 sections. The linker does that before
3817 adjust_dynamic_symbol is called, and it is that
3818 function which decides whether anything needs to go
3819 into these sections. */
3820 s->flags |= SEC_EXCLUDE;
3821 continue;
3822 }
3823
3824 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3825 continue;
3826
3827 /* Allocate memory for the section contents. We use bfd_zalloc here
3828 in case unused entries are not reclaimed before the section's
3829 contents are written out. This should not happen, but this way
3830 if it does, we will not write out garbage. For reloc sections,
3831 this will make entries have the type R_CRIS_NONE. */
3832 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3833 if (s->contents == NULL)
3834 return FALSE;
3835 }
3836
3837 if (elf_hash_table (info)->dynamic_sections_created)
3838 {
3839 /* Add some entries to the .dynamic section. We fill in the
3840 values later, in elf_cris_finish_dynamic_sections, but we
3841 must add the entries now so that we get the correct size for
3842 the .dynamic section. The DT_DEBUG entry is filled in by the
3843 dynamic linker and used by the debugger. */
3844 #define add_dynamic_entry(TAG, VAL) \
3845 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3846
3847 if (!bfd_link_pic (info))
3848 {
3849 if (!add_dynamic_entry (DT_DEBUG, 0))
3850 return FALSE;
3851 }
3852
3853 if (plt)
3854 {
3855 if (!add_dynamic_entry (DT_PLTGOT, 0)
3856 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3857 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3858 || !add_dynamic_entry (DT_JMPREL, 0))
3859 return FALSE;
3860 }
3861
3862 if (relocs)
3863 {
3864 if (!add_dynamic_entry (DT_RELA, 0)
3865 || !add_dynamic_entry (DT_RELASZ, 0)
3866 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3867 return FALSE;
3868 }
3869
3870 if ((info->flags & DF_TEXTREL) != 0)
3871 {
3872 if (!add_dynamic_entry (DT_TEXTREL, 0))
3873 return FALSE;
3874 info->flags |= DF_TEXTREL;
3875 }
3876 }
3877 #undef add_dynamic_entry
3878
3879 return TRUE;
3880 }
3881
3882 /* This function is called via elf_cris_link_hash_traverse if we are
3883 creating a shared object. In the -Bsymbolic case, it discards the
3884 space allocated to copy PC relative relocs against symbols which
3885 are defined in regular objects. For the normal non-symbolic case,
3886 we also discard space for relocs that have become local due to
3887 symbol visibility changes. We allocated space for them in the
3888 check_relocs routine, but we won't fill them in in the
3889 relocate_section routine. */
3890
3891 static bfd_boolean
3892 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3893 void * inf)
3894 {
3895 struct elf_cris_pcrel_relocs_copied *s;
3896 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3897
3898 /* If a symbol has been forced local or we have found a regular
3899 definition for the symbolic link case, then we won't be needing
3900 any relocs. */
3901 if (h->root.def_regular
3902 && (h->root.forced_local
3903 || SYMBOLIC_BIND (info, &h->root)))
3904 {
3905 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3906 {
3907 asection *sreloc
3908 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3909 ->dynobj,
3910 s->section,
3911 /*rela?*/ TRUE);
3912 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3913 }
3914 return TRUE;
3915 }
3916
3917 /* If we have accounted for PC-relative relocs for read-only
3918 sections, now is the time to warn for them. We can't do it in
3919 cris_elf_check_relocs, because we don't know the status of all
3920 symbols at that time (and it's common to force symbols local
3921 late). */
3922
3923 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3924 if ((s->section->flags & SEC_READONLY) != 0)
3925 {
3926 /* FIXME: How do we make this optionally a warning only? */
3927 _bfd_error_handler
3928 /* xgettext:c-format */
3929 (_("%B, section `%A', to symbol `%s':\n"
3930 " relocation %s should not be used"
3931 " in a shared object; recompile with -fPIC"),
3932 s->section->owner,
3933 s->section,
3934 h->root.root.root.string,
3935 cris_elf_howto_table[s->r_type].name);
3936
3937 info->flags |= DF_TEXTREL;
3938 }
3939
3940 return TRUE;
3941 }
3942
3943 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3944 creating a shared object. We discard space for relocs for symbols put
3945 in the .got, but which we found we do not have to resolve at run-time. */
3946
3947 static bfd_boolean
3948 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
3949 void * inf)
3950 {
3951 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3952
3953 /* If we're not creating a shared library and have a symbol which is
3954 referred to by .got references, but the symbol is defined locally,
3955 (or rather, not defined by a DSO) then lose the reloc for the .got
3956 (don't allocate room for it). Likewise for relocs for something
3957 for which we create a PLT. */
3958 if (!h->root.def_dynamic
3959 || h->root.plt.refcount > 0)
3960 {
3961 if (h->reg_got_refcount > 0
3962 /* The size of this section is only valid and in sync with the
3963 various reference counts if we do dynamic; don't decrement it
3964 otherwise. */
3965 && elf_hash_table (info)->dynamic_sections_created)
3966 {
3967 bfd *dynobj = elf_hash_table (info)->dynobj;
3968 asection *srelgot = elf_hash_table (info)->srelgot;
3969
3970 BFD_ASSERT (dynobj != NULL);
3971 BFD_ASSERT (srelgot != NULL);
3972
3973 srelgot->size -= sizeof (Elf32_External_Rela);
3974 }
3975
3976 /* If the locally-defined symbol isn't used by a DSO, then we don't
3977 have to export it as a dynamic symbol. This was already done for
3978 functions; doing this for all symbols would presumably not
3979 introduce new problems. Of course we don't do this if we're
3980 exporting all dynamic symbols, or all data symbols, regardless of
3981 them being referenced or not. */
3982 if (! (info->export_dynamic
3983 || (h->root.type != STT_FUNC && info->dynamic_data))
3984 && h->root.dynindx != -1
3985 && !h->root.def_dynamic
3986 && !h->root.ref_dynamic)
3987 {
3988 h->root.dynindx = -1;
3989 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3990 h->root.dynstr_index);
3991 }
3992 }
3993
3994 return TRUE;
3995 }
3996
3997 /* Reject a file depending on presence and expectation of prefixed
3998 underscores on symbols. */
3999
4000 static bfd_boolean
4001 cris_elf_object_p (bfd *abfd)
4002 {
4003 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4004 return FALSE;
4005
4006 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4007 return (bfd_get_symbol_leading_char (abfd) == '_');
4008 else
4009 return (bfd_get_symbol_leading_char (abfd) == 0);
4010 }
4011
4012 /* Mark presence or absence of leading underscore. Set machine type
4013 flags from mach type. */
4014
4015 static void
4016 cris_elf_final_write_processing (bfd *abfd,
4017 bfd_boolean linker ATTRIBUTE_UNUSED)
4018 {
4019 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4020
4021 e_flags &= ~EF_CRIS_UNDERSCORE;
4022 if (bfd_get_symbol_leading_char (abfd) == '_')
4023 e_flags |= EF_CRIS_UNDERSCORE;
4024
4025 switch (bfd_get_mach (abfd))
4026 {
4027 case bfd_mach_cris_v0_v10:
4028 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4029 break;
4030
4031 case bfd_mach_cris_v10_v32:
4032 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4033 break;
4034
4035 case bfd_mach_cris_v32:
4036 e_flags |= EF_CRIS_VARIANT_V32;
4037 break;
4038
4039 default:
4040 _bfd_abort (__FILE__, __LINE__,
4041 _("Unexpected machine number"));
4042 }
4043
4044 elf_elfheader (abfd)->e_flags = e_flags;
4045 }
4046
4047 /* Set the mach type from e_flags value. */
4048
4049 static bfd_boolean
4050 cris_elf_set_mach_from_flags (bfd *abfd,
4051 unsigned long flags)
4052 {
4053 switch (flags & EF_CRIS_VARIANT_MASK)
4054 {
4055 case EF_CRIS_VARIANT_ANY_V0_V10:
4056 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4057 break;
4058
4059 case EF_CRIS_VARIANT_V32:
4060 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4061 break;
4062
4063 case EF_CRIS_VARIANT_COMMON_V10_V32:
4064 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4065 break;
4066
4067 default:
4068 /* Since we don't recognize them, we obviously can't support them
4069 with this code; we'd have to require that all future handling
4070 would be optional. */
4071 bfd_set_error (bfd_error_wrong_format);
4072 return FALSE;
4073 }
4074
4075 return TRUE;
4076 }
4077
4078 /* Display the flags field. */
4079
4080 static bfd_boolean
4081 cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
4082 {
4083 FILE *file = (FILE *) ptr;
4084
4085 BFD_ASSERT (abfd != NULL && ptr != NULL);
4086
4087 _bfd_elf_print_private_bfd_data (abfd, ptr);
4088
4089 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4090
4091 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4092 fprintf (file, _(" [symbols have a _ prefix]"));
4093 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4094 == EF_CRIS_VARIANT_COMMON_V10_V32)
4095 fprintf (file, _(" [v10 and v32]"));
4096 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4097 == EF_CRIS_VARIANT_V32)
4098 fprintf (file, _(" [v32]"));
4099
4100 fputc ('\n', file);
4101 return TRUE;
4102 }
4103
4104 /* Don't mix files with and without a leading underscore. */
4105
4106 static bfd_boolean
4107 cris_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4108 {
4109 bfd *obfd = info->output_bfd;
4110 int imach, omach;
4111
4112 if (! _bfd_generic_verify_endian_match (ibfd, info))
4113 return FALSE;
4114
4115 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4116 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4117 return TRUE;
4118
4119 imach = bfd_get_mach (ibfd);
4120
4121 if (! elf_flags_init (obfd))
4122 {
4123 /* This happens when ld starts out with a 'blank' output file. */
4124 elf_flags_init (obfd) = TRUE;
4125
4126 /* We ignore the linker-set mach, and instead set it according to
4127 the first input file. This would also happen if we could
4128 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4129 This allows us to keep the same linker config across
4130 cris(v0..v10) and crisv32. The drawback is that we can't force
4131 the output type, which might be a sane thing to do for a
4132 v10+v32 compatibility object. */
4133 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4134 return FALSE;
4135 }
4136
4137 if (bfd_get_symbol_leading_char (ibfd)
4138 != bfd_get_symbol_leading_char (obfd))
4139 {
4140 _bfd_error_handler
4141 (bfd_get_symbol_leading_char (ibfd) == '_'
4142 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4143 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4144 ibfd);
4145 bfd_set_error (bfd_error_bad_value);
4146 return FALSE;
4147 }
4148
4149 omach = bfd_get_mach (obfd);
4150
4151 if (imach != omach)
4152 {
4153 /* We can get an incompatible combination only if either is
4154 bfd_mach_cris_v32, and the other one isn't compatible. */
4155 if ((imach == bfd_mach_cris_v32
4156 && omach != bfd_mach_cris_v10_v32)
4157 || (omach == bfd_mach_cris_v32
4158 && imach != bfd_mach_cris_v10_v32))
4159 {
4160 _bfd_error_handler
4161 ((imach == bfd_mach_cris_v32)
4162 ? _("%B contains CRIS v32 code, incompatible"
4163 " with previous objects")
4164 : _("%B contains non-CRIS-v32 code, incompatible"
4165 " with previous objects"),
4166 ibfd);
4167 bfd_set_error (bfd_error_bad_value);
4168 return FALSE;
4169 }
4170
4171 /* We don't have to check the case where the input is compatible
4172 with v10 and v32, because the output is already known to be set
4173 to the other (compatible) mach. */
4174 if (omach == bfd_mach_cris_v10_v32
4175 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4176 return FALSE;
4177 }
4178
4179 return TRUE;
4180 }
4181
4182 /* Do side-effects of e_flags copying to obfd. */
4183
4184 static bfd_boolean
4185 cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4186 {
4187 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4188 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4189 return TRUE;
4190
4191 /* Call the base function. */
4192 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4193 return FALSE;
4194
4195 /* Do what we really came here for. */
4196 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4197 }
4198
4199 static enum elf_reloc_type_class
4200 elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4201 const asection *rel_sec ATTRIBUTE_UNUSED,
4202 const Elf_Internal_Rela *rela)
4203 {
4204 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4205 switch (r_type)
4206 {
4207 case R_CRIS_RELATIVE:
4208 return reloc_class_relative;
4209 case R_CRIS_JUMP_SLOT:
4210 return reloc_class_plt;
4211 case R_CRIS_COPY:
4212 return reloc_class_copy;
4213 default:
4214 return reloc_class_normal;
4215 }
4216 }
4217
4218 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4219 two GOT entries from three types with two different sizes. We handle
4220 it as a single entry, so we can use the regular offset-calculation
4221 machinery. */
4222
4223 static bfd_vma
4224 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4225 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4226 struct elf_link_hash_entry *hr,
4227 bfd *ibfd,
4228 unsigned long symndx)
4229 {
4230 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4231 bfd_vma eltsiz = 0;
4232
4233 /* We may have one regular GOT entry or up to two TLS GOT
4234 entries. */
4235 if (h == NULL)
4236 {
4237 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4238 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4239
4240 BFD_ASSERT (local_got_refcounts != NULL);
4241
4242 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4243 {
4244 /* We can't have a variable referred to both as a regular
4245 variable and through TLS relocs. */
4246 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4247 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4248 return 4;
4249 }
4250
4251 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4252 eltsiz += 8;
4253
4254 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4255 eltsiz += 4;
4256 }
4257 else
4258 {
4259 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4260 if (hh->reg_got_refcount > 0)
4261 {
4262 /* The actual error-on-input is emitted elsewhere. */
4263 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4264 return 4;
4265 }
4266
4267 if (hh->dtp_refcount > 0)
4268 eltsiz += 8;
4269
4270 if (hh->tprel_refcount > 0)
4271 eltsiz += 4;
4272 }
4273
4274 /* We're only called when h->got.refcount is non-zero, so we must
4275 have a non-zero size. */
4276 BFD_ASSERT (eltsiz != 0);
4277 return eltsiz;
4278 }
4279 \f
4280 #define ELF_ARCH bfd_arch_cris
4281 #define ELF_TARGET_ID CRIS_ELF_DATA
4282 #define ELF_MACHINE_CODE EM_CRIS
4283 #define ELF_MAXPAGESIZE 0x2000
4284
4285 #define TARGET_LITTLE_SYM cris_elf32_vec
4286 #define TARGET_LITTLE_NAME "elf32-cris"
4287 #define elf_symbol_leading_char 0
4288
4289 #define elf_info_to_howto_rel NULL
4290 #define elf_info_to_howto cris_info_to_howto_rela
4291 #define elf_backend_relocate_section cris_elf_relocate_section
4292 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4293 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4294 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4295 #define elf_backend_check_relocs cris_elf_check_relocs
4296 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4297 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4298
4299 #define elf_backend_can_gc_sections 1
4300 #define elf_backend_can_refcount 1
4301
4302 #define elf_backend_object_p cris_elf_object_p
4303 #define elf_backend_final_write_processing \
4304 cris_elf_final_write_processing
4305 #define bfd_elf32_bfd_print_private_bfd_data \
4306 cris_elf_print_private_bfd_data
4307 #define bfd_elf32_bfd_merge_private_bfd_data \
4308 cris_elf_merge_private_bfd_data
4309 #define bfd_elf32_bfd_copy_private_bfd_data \
4310 cris_elf_copy_private_bfd_data
4311
4312 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4313 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4314
4315 #define bfd_elf32_bfd_link_hash_table_create \
4316 elf_cris_link_hash_table_create
4317 #define elf_backend_adjust_dynamic_symbol \
4318 elf_cris_adjust_dynamic_symbol
4319 #define elf_backend_copy_indirect_symbol \
4320 elf_cris_copy_indirect_symbol
4321 #define elf_backend_size_dynamic_sections \
4322 elf_cris_size_dynamic_sections
4323 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4324 #define elf_backend_finish_dynamic_symbol \
4325 elf_cris_finish_dynamic_symbol
4326 #define elf_backend_finish_dynamic_sections \
4327 elf_cris_finish_dynamic_sections
4328 #define elf_backend_create_dynamic_sections \
4329 _bfd_elf_create_dynamic_sections
4330 #define bfd_elf32_bfd_final_link \
4331 bfd_elf_gc_common_final_link
4332 #define elf_backend_hide_symbol elf_cris_hide_symbol
4333 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4334
4335 #define elf_backend_want_got_plt 1
4336 #define elf_backend_plt_readonly 1
4337 #define elf_backend_want_plt_sym 0
4338 #define elf_backend_got_header_size 12
4339 #define elf_backend_got_elt_size elf_cris_got_elt_size
4340 #define elf_backend_dtrel_excludes_plt 1
4341 #define elf_backend_want_dynrelro 1
4342
4343 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4344 linking and libraries (if it's a win of any significance). Until then,
4345 take the easy route. */
4346 #define elf_backend_may_use_rel_p 0
4347 #define elf_backend_may_use_rela_p 1
4348 #define elf_backend_rela_normal 1
4349
4350 #include "elf32-target.h"
4351
4352 #undef TARGET_LITTLE_SYM
4353 #undef TARGET_LITTLE_NAME
4354 #undef elf_symbol_leading_char
4355
4356 #define TARGET_LITTLE_SYM cris_elf32_us_vec
4357 #define TARGET_LITTLE_NAME "elf32-us-cris"
4358 #define elf_symbol_leading_char '_'
4359 #undef elf32_bed
4360 #define elf32_bed elf32_us_cris_bed
4361
4362 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.139374 seconds and 5 git commands to generate.